I'm really not sure that it would be beneficial for the unique styles of some of the species - including, but not limited to Orions - if they would become available to anyone. A distinctive look may very well stay part of the race.
Just my opinion, of course. I'm a big fan of unique differences - be it between the factions or individual species.
I haven't much to add, other than that I agree with Valias. Never much cared for having my Nausicaan walking around dressed like a Klingon before the racial costume options appeared, and I imagine I wouldn't be too crazy about seeing the reverse. Letheans maybe. The rest of you all just aren't ugly enough to make it work...
But I'm all for the Tril and other races getting some non-KDF uniform options of their ownl. And the Klingons getting a thing or two as well, that none of the non-Klingons get.
LOL Let's be honest here, I am not ashamed that I am a dirty old man who loves the look of a sexy polygon or two. I would like MORE clothing options in GENERAL for the Klingon Faction... but if they made the Orion set a purchasable item in the C-store for OTHER races/factions... I wouldn't be sad to see that. Barring that... my damn KDF Alien hottie needs some serious skirt-age, PRONTO!