Making it an Only Arcade thing will give it more life to the mechanic, and making it stack the longer your exploration is, is genious! TOTALLY GENIOUS!, even if its permanent or activated each couple of days per week

Has for the danger rooms, if they´re not going to redo them entirely, at least they could specify the monsters lying beyond that gate like whit the screens on the mission "The Gauntlet". Unhappy are the moments i find fiend danger rooms without previous warning.

Also they could add exclusive prices for bigger loot stacks to make it more mouth watering. Even if those prices are exclusive tokens depending the monster type of a level, for a shop at Arcade managed by a SK HQ Clerk, whit new recipes or recipes not tied to other tokens from events or bosses, an exclusive accesory box for high yield of these tokens, exclusive decorative helm and armor (Maybe different sets themed around Explorers). Even other rare items but bounded, like Sparks of life and Fire Crystals. All while you are sitting on your pile of newly harvested crowns from the long travel to the core! And maybe a couple of options that uses Valestone and Moonstone has tokens aswell.

on pile of That, the bigger the expedition stack, the more probable is to find rare monsters, has for that, they should add more of these whit exclusive prices aswell, to make it even more equilibrated whit the other rare spawns, or it would get over encumbered whit love puppy pendants. Maybe adding a Tiny skull necklake accesory dropped by soul jellys?

Also if this does works, the devs surely will love to create new never seen before levels!, like cursed themed, or actually stun themed or even Monster type level for gremlings and construct! (That icon whit the monsters that depending it colors its the whole level theme)

On top of that, a Level editor whit "Price Box Suggest area" "Medicine Box Suggest area" and "Monster Spawn Suggest area", so players can show their own levels and the last parts are done by the GH team in calibrating other whereabouts that no player should abuse initially (Like making a whole level whit price boxes... that is not explicit a vault level).

Maybe adding more life to normal levels, i mean, clockwork tunnels where is more common a certain monster tipe, should have more visual cues alongside the clockworks theme, like for wolver adding more grass patch, some blocks are bushes, a couple of trees. For slime, the background has giant slime blobs across the scene and background, that match the level theme, like shock, having silver blobs on corners and alongside the rooms, has a cue of many quicksilvers living in the area. Or office tables and chairs, water dispensers, dried plants for devilitie clockwork levels (they´re expanding Underworld.Co´s work force). Patch of dirt and graves for haunted clockwork levels whit ghost type monsters.

And most of this could be done by reusing elements already present in the game or changing the colors to the correct ones and add other level elements for a bit more of cohesion in the levels theme.

Now i think well, the Arcade needs and update/rework of the level of mission´s introduction to the game.

Wheter it be tokens based on monster family, debuff theme of the level or exangin minerals for tokens of their color, shop where to use them, bonus for further travel the clockworks, more variety of levels. Like adding Cursed and True Stun levels into the mistery elevators instead of freely roam around (True stun monsters are inmune to stun).

New recipes for new equipment, this could easily tied to other suggestions around the forum. Like Deluxe Vitasuit upgrade whit deviaton whit other defense focus, Gram, new elemental cutter, New variety for already existing weapons. Other forms of pure split defense has example Zomber Raider set that protects Piercing Shadow, maybe having a fire or ice variation. Scarlet Shield upgrade, maybe split upgrade whit a Charge Attack Bonus and other whit move speed upgrade. Maybe a Bosspit armor whit double bonus against Gremling and Fiends. who knows.

Possibly an Accesory Alchemy machine that will use new and old materials alongside exclusive Arcade shop materials, Accesory and costume boxes in favor of these new tokens.

Possibly the addition of a New bonus type and their UVs, that reduce damage taken from specific monster families.

More immersion to all levels, in example, the normal fiend clockwork corridors has a purple fiendish shine, maybe adding details to other level theme mixed whit the debuff theme? like a blast furnace for ghost tipe, will have the background darker yet the subtle lights of the machines in the distance has it is haunted the whole level. Or adding more details to the corresponding main monster family of the level, like adding colorfull blobs for clockwork slime levels (whit matching color for the debuff), Adding desktops, chairs and other office stuff for fiend clockwork levels, Tombstones and dirt sections on haunted clockworks levels, more plants and trees in wild paths. Gremling and Construct are the ones that will keep the usual style for their clockwork levels. And we can think of more additions.

New monsters to be added into the game, wheter they´re the much needed new beast monsters or for more bigger monster families, there are ideas around.

More Themed levels, like, why there is no third city type level? we have the dark city and the concrete jungle, what about one where automatons are mantaining it still working despite the lack of life? Or what about a level themed around where Lumbers are born? abandoned place where ancient magic and tech grow lumbers from a big tree matriach. (some ideas are repeated but still)

A much needed use for Moonstone and Valestone just like you say, can be used to augment the loot bonus, there is my take, at the end of every level next to the elevator, there is a mineral cruncher that pays in mineral tokens, using it not only grants the tokens, but has well, boost the level below, this can be used to boost your way into more riches and to get more tokens of the other kinds (mosnter token and theme token) has well, and of course... has a fact of matter, i want that the Moonstone and Valestone Tokens, to have really good prices in their shop.

There is already space for a new shop in the arcade. Has well a 2 spaces for new gates! One could be for testing user made levels, no loot, price boxes are empty, this place is for testing the dificulty of a level from T1,T2 and T3 and possible module testing. The enemy spawns would look like "Suggestion Tiles" and we could choose the level themes to define what kind of monster spawn has well, has for GH they would use this skeleton of a level to apply them almost freely, to a clockword level, or a monster themed modules. And a fourth gate, where these levels gather so we could try them in variying order, before they´re fully tested by everyone, so we can add them to the main gates.

And im totally open to more suggestions, modifications, we have to MAKE ARCADE GREAT AGAIN!!