I will be forever mad about Voyager. Everything was set up to succeed: crew conflict! Unknown location! Some good actors! Voyager was a nice looking ship!
And then, famously, the actors playing humans were told to be blah and less dynamic to let the alien characters stand out more, and the series had to follow a more stagnant TNG style (they tried to serialize certain plot threads which I appreciate but were confined to episodes of the week a lot of the time).
Like, I can just imagine a mirror universe where the entirety of season 1 was the Starfleet and Maquis crews learning to work together, and conflict and drama as they're brought together by even more hostile external forces, and also the actors were allowed to actually act and stuff.