I like to use the compositor in Blender to make the viewport render look more beautiful.
For my more recent characters, I added:
- Bloom (Glare)
- A white outline (Dilate/Erode)
- Diamond sharpen (Filter)
These can really improve the visuals a lot, depending on the character!
Gacha Games get a lot of hate, however they are constantly creating FUN and ARTISTIC mini games that provide INTENSE gameplay. I wish Western Devs focused more on fun like Eastern Devs, but they are too preoccupied with staying unoffensive.