I know I enjoyed S7 a lot. For me, though, the high point of the series was around S4-S6. S7 was slower, somehow. Which isn't bad - it definitely needed careful pacing and the season itself was obviously all dovetailing to a single story about closing the Hellmouth (but oops, there's another in Cleveland).
But there was a lot of material to cover, and I think I felt at some point that Spike's story was moving just a little too slowly, and possessing too much of the overall season. Maybe it was a bit too finessed. But after he attacked Buffy in S6, it's hard to say how long his transformation, and Buffy's figuring out how to trust him again, should have taken. So... I guess the pacing was alright in that aspect, but a bit of the other could have been done with a shade more haste, I guess.
S7 was definitely the darker season. Someday when I have all the time in the world on my hands, I want to go through all the seasons and tally up how many scenes were in sunlight and how many were in darkness. Coz I think S7 took place at night, moreso than the other seasons. I'm sure that had an effect on my perception of the story itself being more dark and more deliberately paced. Plus, what with the power going out in the city near the end of the season, there just wasn't much light going on after that. And again, I'm sure that was a device to move the story forward, to the big final battle which took place, surely not by accident, in the daytime. And it's kind of nice that Buffy is a creature of the dark, and the final scene is of her in the sunlight.
There were a couple of eps in S7 that just didn't do it for me. But I think overall the season was good, but as a send-off for Buffy, for me, it still left a feeling of incompleteness... like there was a bit more story left that should be told. But I'm sure Joss & Co. had their limits with budget, timing, and the schedules of the cast and such. You do what you can, and try to get the best you can with what you have. I'm glad there's a S8, though, even if it's in comics. 🙂