Nano has a surprising amount of features. I actually use it as my main text editor, and I rarely find myself lacking anything I could possibly want. Off the top of my head, it has the ability to run 3rd party code, a file browser, autoindenting, linting, macros, and a rudimentary autocomplete. A lot of it's reputation for being weak comes from bad defaults, which can be quickly fixed by ricing your nanorc file.
First time I heard about nanorc!
There’s something really cool about Nano. It’s almost everywhere, it’s super simple, but doesn’t have bonkers key combos like vi and emacs.