Re: How about a "trapped in the past/future" Trek?
Or, how about a Trek trapped in the future--the Federation has fallen, and the ship is weaker (to a significant, but not crippling, degree) than whatever race/federation/etc. is currently running things.
Sounds a shade like Andromeda
On the continent of wild endeavour in the mountains of solace and solitude there stood the citadel of the time lords, the oldest and most mighty race in the universe looking down on the galaxies below sworn never to interfere only to watch.