I miss Elevator Pass. I used to buy it all the time and use mist to craft, that gave me a small cheap advantage over other players (I could earn more crowns since I didn't have to pay elevator fees). Now there's no ele pass, no CE pack with benefits for $6 either.

My suggestion:
Add more energy/item/$$ packs!

Slot pack: receive 2x trinket slot, 2x weapon slot, some small amount of energy and some bonus (costume and/or keys and/or boxes and/or something else) for $5 ($6?)
Upgrader pack: receive 1/2/3 UV tickets, some energy and extra items/costumes/accessories/ect for $5 ($10?)
Crafter pack: some crafting supplies (rarities) that are cheaper than buying from supply depot

Feel free to add your own pack suggestions, I'll put most interesting ones (in my opinion) into the first post (keeping author's name).