Looked so backwards to me, too. However, I decided to give it a go, anyway. Now, I have some scripts and small commands which start with a comma, and it looks neat and time saving.

Yes, I can do path ordering to override usual commands. However, having a set of odd-job scripts which start with a comma gives a nice namespacing capability alongside a well narrowed-down tab-completion experience.

While it's not the neatest thing around, it works surprisingly well.

Another idea which looks useless until you start using is text expanders (i.e.: Espanso and TextExpander).