Two, see my response above about it, and why this bothers me. S3 didn't do anything particularly different from Season 1 except it had the Galaxy class taking on the gigantic fleet, rather than the La Sirena. It smacks of favoritism. It stands out to me, and is ultimately just plain frustrating.
It's not favoritism. It's JLP and the ship most closely associated with the character taking on TNG's most intractable foe in a climactic battle to end the story that's been told in dribs and drabs for decades across two series and a movie. If it were La Sirena it would have been bizarre and anti-climactic. Even if it IS favoritism it's still pretty immaterial. The USS Enterprise (any version, any bloody A,B,C,D,E,F,G) and the protagonists therein doing cool stuff is the ur-essence of Star Trek. Using any ship other than the/an Enterprise in *this* episode, solving *this* problem, with *these* characters would be staggering creative malpractice. You may not be someone this applies to, but my feeling is that the fanbase in aggregate is at best indifferent to La Sirena. I can't even remember what it looks like and I watch these shows multiple times.