Very good suggestion
 

If gunrox made map like ice Valley and the box only you can find arts on it and be art fight but if you win arts no return to you because its just for fun arts in game!!

bad idea
 

that would be boring because then you don't have to collect arts to play art games, arts gonna drop by value and you can use them for free. i'm not saying you can keep them but it's a bad idea

Not bad
 

Arts still on the game you no have problem to play with arts in random battle just make it a mode on gunrox like king of the hell in junk yard so...