I think not adding new features frequently and keeping everything stable and working in the long-term is also meritorious. Vim is the same on my local machine, on my rpi, and on an Ubuntu 20.04 VM that I use for some proprietary software.

Also, I cannot think of an extension / new feature that makes sense as a part of Vim (if I want something more, I want a lot more. I don't want Vim to do a lot more, for the sake of simplicity and conformity, that's a job for vscode with Vim extension).

At the same time I wouldn't object to someone adding features to this program. But they have to try really hard to convince me to start relying on that feature (I wouldn't, because I would miss it on Ubuntu 20.04 and I will forget how I used to work without that feature).

I tried nvim a few years ago and honestly didn't find anything advantageous there. But since I had `:sh` in muscle memory and it was a bit (very?) different there I gave up on nvim.