My suggestion in the near future instead of player vs player, is to have a Player vs Bosses arena. When OOO makes enough bosses to come around since we're short on bosses (Vanaduke, Twindogs, Snorbolax, and Jelly King). Thats if there are newer bosses in the future. Players can team up and band together to fight the bosses one by one nonstop or a resting area that heals for a certain amount or to full health. On the front and bottom sides will be unreachable doors for mobs founds in the bosses (Excluding Jelly King since he produces his Jellies.) will spawn over a certain amount of time whether dead or alive and the mobs spawns before will not die. This will force the players to focus and eliminate the Boss as fast as possible and have a possible strategy for the the area it self. The fight will begin once everyone as stepped within a party button located in a designated area.

Each Boss will have multiple or certain maps to be played on since Snorbolax requires the bell, Twin-dogs required switches and missiles to hit one another and Vanaduke who requires water to fight him. The Surrounds of the bosses will have certain areas that will hurt players if not careful. Such as thorns, venting fires, electrical fields, and other misc.

Players might be able to buy from a vendor, health capsules (Pills), vitapods, vials, remedies or even the unreliable (sometimes reliable) mecha-knight before the arena fights begin. However will unable to buy anymore items after the boss arena begins. So players will be forced to play conservative on their items if they have bought any to begin with.

Players will also be able to communicate with one another about what equipment they should use so people should bring one or duplicates of weapons.

When a boss is eliminated, the players will be rewarded with a certain token/coin for possible new armor, weapons, recipes, materials?, and costumes. Also when their is less people in the arena, the players will be granted a certain bonus of tokens/coins for handling the boss themselves. However bosses will have the strength, health, and difficulty of a party of 4 people or even possible stronger. Players should be given the options to play the arena individually, with a party (limited to 2-4 determining the leader of the party.).

At the end of each Boss round, a score board will show how much damage the team has done together and individually. This might cause competition between one another to do better.

If a player falls in battle, it will cost the same amount of energy determining the bosses the players are facing. If all the players fall in battle and do not use energy to revive themselves within 3-5 minutes, the game will end show a score board mentioned earlier and will not be rewarded. Yet, there is a twist, players are limited to how many times they can be revived using energy causing the players to be careful and less reckless towards the fight. This will highly increase the cost of items due to the difficulty of the arena.
(Edit*) Players will be limited to how many times they can enter the arena to avoid abuse from farming the bosses. That or bosses will be randomized so less abuse will occur.

Yes I am aware there are some major problems to this idea and many more that i am not intelligent or intelligent at all to think of.
Problems:
1. Tier Equipment
2. Lag
3. The bosses difficulty
4. ???
5. Players themselves.
6. Miscommunication
7. (Any more? i will post them when i can.)

And please excuse my English and grammar and I don't know if this was suggested before. Thank you!