These are my opinions based off a few hours of play last night in PvP WZ's. I played against a lot of recognizable names, so had a good feeling for how I normally do against them.
I was in BM gear with some rakata and columi mixed in before 1.2. HP's were around 17k pre 1.2 and after they are around 16k. I figure everyone got that nerf though so it didn't bother me too much. My survivability has gotten worse. I was dieing a lot more then I normally did. The really big thing that I noticed was that I was always out of energy trying to use the rotation that I used before but adding in overload shot now since it seemed like everything was on CD when I'd go to use it. I thought I would see some bigger hits with BS and HS on my openers, but if there was I wasn't noticing it. Pre 1.2 I had gotten some 4.8k HS openers, the biggest one I saw last night was 3.3k. 4.8k was usually an extreme case but I thought I'd at least get some 4k's in there. Damage out of stealth was a big problem as well, with the CD on BS it felt almost useless to try to go after a player if I wasn't stealthed. Being out of energy a lot, I was using stim boost all the time and consuming my TA so Lacerate wasn't available nearly as much as it used to be either.
No one ever likes change, that was pretty much par for the course for me. I tried to go into it with an open mind, but by the end of the night I was pretty bummed about the changes.