My days of trying to mentally squeeze all of Trek into a cohesive whole are long past.
Continuity and consistency across shows and decades may have been fun at some point, but now it's just a straitjacket for creativity. It's like being told you can only play in the yard when there's a whole forest over the fence.
Trek is unique among media franchises in ostensibly maintaining a cohesive continuity throughout many series and movies (even if there were some contradictory details).
We are all just Worf in "Parallels." Every time we see what we think is a continuity error, what has actually happened is that the show jumped one universe over between episodes. Trill look different? One universe over. Homicidal, profit-crazed Rom now a hapless softie? One universe over. Seven's ability to raise the dead not referenced when red shirts die? We've moved over into the non-"Mortal Coil" universe. MU suddenly needs a cloaking device when we'd seen these ships decloaking previously? This MU is one universe over from the MU we saw last time.
And thus, every continuity error in all of Trek is now fixed. It's seamless!
