I should mention what is becoming my favorite thing about LazyVim's default config, which is the "flash" or "seek" command (LazyVim maps it to `s` so I think of it as "seek") from https://github.com/folke/flash.nvim. I didn't like it at first as I was used to typing `s` to quickly replace a single character with a bunch of text (as opposed to `r` which replaces it with just one character). But I soon learned to remap my brain to use `cl` where I used to use `s`, and then I learned to love "flash"/"seek" mode.
I wrote about how it works in https://news.ycombinator.com/item?id=48118585 so I won't repeat that here. But if I had to pick my favorite feature from LazyVim's config... well, actually it would probably be something else, but `s` is definitely in the top three by now.