I hope that it's better than most of season 4 and all of season 5 so far.
There's no doubt that the last two seasons have been completely different in tone to the first three, which for many of us, was what Fringe was all about. While I really didn't like S4 all that much, I have found this abreviated final season to be compelling, and I think the main reason for that is that although the scenario is changed, the character dynamics have returned to what they were in S3. Especially now that Michael placed Walter's original memories back into his scrambled brain.
I also like the tight story-telling here, done by nature of having only a half-season to do it in.