I think God mode is not good for this game if you guys can make special MOD for this game these are my recommendations:
1. Exp boost (from grinding or from quest) -> you need to lv up fast to open all features when no one opens it.
2. Equipment Drop rate make it 100% for red 2-3 stars if possible, (normally the types of equipment are trash)
Reason: I played this game already, I can be top 5 on the server only spent 0.9$ at the first recharge, the rest you can get the equipment from the boss. EXP boost needs to make you lv up faster. The trick is farming the pieces of equipment from the boss all the time to make T5 3 stars, then you can reach 1.5M power easily. Same goes for T6-T9.