I'm just slightly miffed about the 1TB storage for free as I got Pro late last year mostly for the unlimited storage, but I guess since the stats are staying a Pro feature that's not too bad, although I would really appreciate (well, expect would be the correct word, but I'm trying to be positive) a better stats system if that's going to be the main feature of Pro, which is what it looks like so far. The new layout is...awkward for me at the moment, probably because I had gotten so comfortable with the information I used to be able to see on the front page. They say the info featured will mostly stay the same, and I guess since I haven't had any recent comments or favs on my photos I wouldn't see that, so another thing I can't yet comment on fully.
Overall I'm just on the positive side of "meh," but I'm hoping it grows on me...quickly.
Oh, and one other thing. While the very high level of storage may encourage some of the great hobby photographers to post more great photos without worry of hitting a limit, I'm more concerned that this will result in average or worse snapshots flooding the site, and possibly activity feeds. I know the free account's limit pushed me to be more selective and better at editing, choosing, and even shooting photos, and I still try to keep that focus even with unlimited storage with a Pro account.