[ixfo]

Absolutely. I use loads of those features including regexp in nano all the time and it works fantastically well. For me it's the fact that it's small (so available on nearly every platform) and the command interface is so quick. It's light, fast, and snappy to drive - no context "shifts" to get to commands, and I can do "power user stuff" with just a simple key shortcut _which is written on the screen so you can see it_ most of the time. It's easy, and that's worth more than a thousand vims. See also the success of Visual Studio Code.