Same here. I definitely went through a powerline, alias, huge vimrc, etc phase, but it turns out just sticking to the base toolset is pretty handy.

I can sit down at (or ssh into) any machine and be basically just as productive, and it also turns out that I just always want to know more than nicely fits into the prompt anyways.

There's something to be said for accepting the defaults of a tool, and learning to use them well. Customization is powerful, but... I think most times it's not the right call until you're already an expert in the tool at hand.