How exactly is the Borg episode canon-breaking? It ties in well. VOY is far more canon-breaking when it comes to the Borg. It's a good stand-alone episode, it did not feel like fan service. >I guarantee you nobody who disliked Enterprise followed the Shran arc all the way through or watched season 4, particularly the Kir'Shara arc and the Babel arc. They really tie the show together and put it on par with DS9 as one of my favorite series.
I watched the entire series and while Shran is a good character, it's not enough. I'm not a big fan of Vulcan episodes, and ENT was filled to the brim with them, but that may have just been my personal taste (and I guess it makes sense for the 22nd century where the relationship between Vulcans and humans is still evolving). The Xindi arc was a fucking joke, it did absolutely nothing for me. At no point did I feel any emotional investment to care aboutit what's happening to them, it honestly felt more like the first two seasons of VOY where we basically follow a ship behind enemy lines exploring an unknown area of space by itself.
I guess season four works as a season except the finale, but the problem remains that it was still a setup season. DS9 did set up the Dominion War for a long time, but then it erupted in season 6, whereas ENT gets awkwardly wrapped up before the war with the Romulans starts. There is also no main villian like Dukat in DS9 except that one Romulan general nobody cared for. I know that ENT allegedly found their pace and style with the fourth season, but sorry, this was made in the modern era of television, you can not allow yourself to fail around for three fucking seasons like Star Trek tradition and then expect not to be dropped. This isn't the 80s anymore.