I never new I wanted this until right now.

I always wanted a Trek series that followed humans that were not part of the Federation. Maybe Maquis. Maybe characters more like Firefly's. Just in that universe and not bound to the rules and regulations we already know about through the other series.

Prodigy almost fits, except that the kids are aspiring to be like Starfleet so they are still following their rules and regulations... Mostly. Plus they're being guided by a holographic version of Janeway.