That's ten more than Enterprise
had, and one more season than the Trek series got from its network. I'd have let CW run for one more year to tie up more loose ends and give certain characters more proper resolutions and sendoffs in the buildup to the Jedi Purge and the birth of the Empire, but whaddya gonna do.
The fans don't run shows, the producers and the networks do. 108 episodes isn't too shabby for any series (animated or otherwise) set in the depths of outer space. Not that many in television history have outdone that.