1- Which is the best mode to get gp ? HM, of course xD
2- Do u think that repairing the weapons price is right or total rip off ? Depends which weapon, such as shotguns and there should be other temp stuff that requires repairing but every time the weapon performance is 'degraded' it actually doesn't do anything at all (ex. SG522-Camo stats don't change if you keep breaking it)
3- The most gp u gained in a single game ? I dunno
4- is gp winning rate good or no ? Crates you mean?