One of the things that really, really annoys me when I get lazy and use a pre-bundled set of (neo)vim plugins is how every one of them uses mouse functionality. I only use the mouse to copy/paste from the terminal to system clipboard. I don't want it hijacking him and entering visual mode.
Vim has a better way, it's called :set clipboard=unnamedplus (alternatively, one can bind anything else to copy/paste to/from system cliboards). Not sure why would one use a mouse for this, honestly
Ctrl is already used my a large number of commands in POSIX shells. This is one of the places that I really like Apple's solution (despite really not liking most of what they do). Super/GUI/Command + c/v is a great improvement in the terminal.
You know, if I can use vim bindings and regex, I might try it out. I tend to try to keep my neovim plugins fairly lightweight when I config myself. Not being electron is a big plus.
What stopped me personally was reading they use a different order of operations, so to say. Where vim goes action + range, helix goes (or at least used to go) range + action (like replacing ci" by i"c). Mb that makes more sense for them, but I'm too lazy to re-learn that for no particular reason