Yes, you can define your own commands to do whatever you want. For things like fuzzy search and frecency sorting, there are a handful of plug-ins and frameworks that can help, including an FZF interface and a few other Vim/Neovim-specific plugins like Telescope and Denite.

That was my first thought when I saw these. I’ve been interested in learning Vim but these look like hell to type.

You don’t need these.

I‘ve been viming for 10+ y and just using the normal shortcuts and ways of manipulating text is a major productivity gain.

Vim regex engine descends from vi and ed, which predate Perl Compatible Regular Expressions, whose derivative forms we're all familiar with

Yep I'm familiar with regular expressions, but I don't typically use them as a command prompt.

Yeah, just explaining why it looks weird

Not an answer to your question, but FYI, command history (q:) might be useful for you if you hadn't come across it yet.

if you have already used the command you want recently, just start writing the command you want, then press the up arrow to search through your history for commands that start with whatever you've typed so far.

also, a nit pick, if you use Magic mode (\v), that pattern gets way better:

:g/\v(\d{1,3}\.){3}\d{1,3}/y A