Designwise, it's a futile exercise: people in "space uniforms" look like clowns no matter who designs those, on what principles and using which resources.
This is just a corollary of people in uniforms looking like clowns, except (in certain very rare cases) to contemporaries and context-mates. Which in turn just flows from people in clothing looking like clowns to anybody outside the timeframe and context. You can't look cool outside your era. And Trek is all about being outside the era, any era.
"Realistic" doesn't apply, either - you only need to browse through US military attire across the years for proof, and heaven forbid you look farther. As long as it covers part of your body, doesn't completely fall off all the time, and is made of something that allows for at least limited limb movement, anything goes.
That said, DSC has gone all stops out for "space silly", much like TNG, whereas ENT went for "contemporary futurized" and TOS sort of chose "contemporary perpetuated". None of these seem good approaches for that all-important verisimilitude (least of all "contemporary futurized", because we know we're predicting the future wrong if it looks the same as today).
Hmm. My preference might be "bygone era futurized", with clear Napoleonic or Ming dynasty influences put to space use - it's one step beyond "space silly" on one hand, less jarring than "contemporary futurized" on the other. But there's still room for that, as the fundamental factor here is that in Trek, uniforms come and go in bewildering variety and without rhyme or reason. Exactly as in the real world.
Timo Saloniemi