At the end, if it's not the grid, it's the lack of kamis. Not counting wind kamis -which for some reason I kept getting on a Kirin account-, I also don't have enough kamis to make 4 strong teams, leaving aside the level and power of the grids. With my thunder kamis locked and my light team obliterated on the first stage of 11 floor, I don't think I have enough kamis to even zerg rush the floor.

And can confirm, being a spending competition is the reason to live for gachas, especially ones with a ranked ladder. Though this is still better than others, at least you can pay time to get strong. I said this coming from a mmo with it's own whale eden and a P2W wall so big it was amusing to see.