I rarely visit Reddit, so I'm grateful that you took your time to post it here ^_^
Yep well-known characters were great, and I plan to add a custom character creator into the game with an option to edit your protege, so after finishing the first one you will be able to use the original one or create your own with any art that you would like too *_* (but this feature will appear much later, as I'm still working on expanding main mechanics)
Sound effects will appear 100% I just need to get to it (づ_ど)
Same with the mobile version, I plan on adding it when the game is a bit more fleshed up
And the font is customizable in newer versions! Yay ⸜( ˃ ᗜ ˂ )⸝
Thanks for your review! I'll do my best (☆_☆)