One eye-candy thing it can’t do is animated cursor movement. Not sure how to describe this, but basically, when the cursor moves, you draw a trail behind it.

https://old.reddit.com/r/KittyTerminal/comments/1g7vkwt/neovide_like_cursor_animation_in_kitty_terminal/

According to that, KiTTY got support for it six months ago.

EDIT: That being said, that’s not really “retro”, so might be out-of-scope for the project.