My favorite Trek uniform doesn't exist.
If it did exist, it would be the TMP uniforms with the following changes.
- Two pieces (separate pants and shirt)
- TOS color scheme, but a little more “vivid”.
- Short sleeved
- Rank insignia on the epaulettes like Kirks short sleeve variant.
I'd also retain Kirk's short sleeve variant as the "Captain's uniform", as well as his Admiral's uniform for whenever Admirals are on the show.