I mean... if people don't mind reaching, so what? I purposefully don't remap my leader key, although I don't have many leader mappings so it's not like I'm reaching for it constantly.
I mean if people don't mind having cast iron glasses, sure
No but really, vim's paradim that you should go back to normal mode constantly. With the current situation you get posts on the vim subreddit asking/telling you about insert mode editing commands. You might as well use Emacs at that point, at least it would be the intended workflow
It is not good for your wrists. Don't do that to yourself