Eeee..... animu disco wookie ?
Never seen this chick before
So now they`re reaching for artifically colored girls ?
Maaan...
Soon we`ll have Fruits and Plants Knight Girls update since it seems they pretty much ran out of flowers. I mean bunch of the knights are things like bushes, wines, few of them fruits, etc.
This way there will be way to many characters, bunch of which make no sense for the setting. Plus just bunch of characters where you will forget about many of them, simply by how many there are.
I think they whiffed the train on the Rainbow Promotion.
The way I would have introduced that would be that the Promoted girls would get new reskins with updated sprites and ultimate skill effects. There would be either a special gacha tab, or it would be rolled into the standard one, and you would have a chance of pulling the universal Rainbow Promotion Crystal, Its rates would be higher than native rainbow but less then silver. About the same as Gold girls. I would also remove Bronze girls from this gacha.
The universal stone would simply promote the girl of your choosing. But the thing is, with new art and ulty you would effectively get a completely new girl, but the number of actual girls would not increase, thus the market over saturation would not happen. You would simply switch your 3* for ex. girl into a 6* it would pop new art, sprite and ult effect, but would not add a new knight into the standard gacha itself.
Just like how you can swap skins for some girls who have multiple of them (Cyclamen and Mint come to mind)
Sounds complicated but it really isnt if you think about it. And they would still sell FG so people who want to pull on that gacha can pull on it, so no market loss either. Granted I understand its not a perfectly polished idea but hey, I am just one mofu, if there was a whole team of mofufus I am sure it could be done :3