If your interested in text editors then it's worth watching some youtube videos on kakoune. There are some great ideas in there that even the old dogs could learn from. Actually, a lot of us could learn from it when it comes to things like feature discovery, it's a really good example of complex yet easy to use software.

The reason I haven't switched is because I prefer vims command->motion over kakounes motion-command, which doesn't quite sit well with me and because I don't like the scripting choices they made.