I decided to compile a list of what I wan't to see in the arcade.

Games
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Urban Champion clone
Pac Man clone
On-Rails Lightgun Shooter
Go Kart Racing Game
Rogue (Complete with ASCii graphics!)
Daily Prize Wheel (Spend a special token given as a freebie every day for a random prize, and spend arcade tokens for up to 4 retries!)

Weapons
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Purple Pulse Shotgun
Laser Tag Gun (Comes in various beam colors!)
Skin Storage (buy a skin once and switch to it whenever you like!)
Airsoft GBB (Gas Blowback) Pistol (Same stats as single P2K, but with more sleep)
Airsoft GBB Pistol Skins
Harvester Beam (6 damage, 0.1 freeze, 0.1 sleep, no reload, cooldown meter instead of clip, picks up flowers, mushrooms, trash, etc., mines, and can be worn on back)