It's too bad we get longterm uniform continuity there, because the one characteristic of Starfleet uniforms is that they don't have longterm continuity: that's a continuity violation, really...
But gradual changes within a certain format are an established way for Starfleet to go. The black pants plus pullover thing went through at least three variations from "The Cage" through "Where No Man" to TOS, while the colorful spandex pajamas thing evolved through multiple steps as well, from early TNG to late TNG to DS9 and VOY. We might just as well allow the black pants plus maroon tunic motif to have three or four generations of subtle variation, too.
...Although it would have been cool if the jackets were ditched altogether, so that "Tapestry" would essentially have featured a modern variant of the pants-and-pullover style.
What could be cool in the future is if STXI shows a jacket that can be worn with the TOS style, and suggests that starship crews go for a relaxed, jacketless dress code while more stuffy folks ashore wear the entire regalia. So in essence, the TOS and TFS styles are the same, both featuring pullover plus jacket...
Timo Saloniemi
