The recycle flag on structures in 1.2 is brilliant and another welcome addition. And it eliminates (or at least curves) deconning problems.
On the downside of the strategy changes, there is the higher learning curve (FPS-wise), and the adaptation period for 1.1 veterans (strategy-wise). But I got the impression that people who went to MGDev games were quite pleased with the overall feeling.
It's clear that 1.2 will change tactics quite a bit for both humans and aliens. It should, in theory, provide for much more action and more dynamic games all around.
"Camping" usually implies humans are doing it, but in fact in 1.1 both humans and aliens are camping: humans in their base, the aliens just outside it. For humans, in 1.1 there's this general feeling of clinging to the base as a nice warm and safe place and going out only for bright-eyed and bushy-tailed hit-and-runs. As for the aliens, they develop a feeling of owning the rest of the map and think they can take their time, stay outside the human base laughing and joking at their expense in between short hit-and-runs for snacks, and generally make a slumber party of it. It comes across as some sort of kids movie; the little boys' treehouse vs the little girls' pajama party.
1.2 will force decent human players to give up their warm secure blanky and roam the map more, which in turn will cut the aliens short on their feeling superior and in control.
However, I don't personally feel that this will be a perfect and complete solution to camping, anymore than recyclable structures are a perfect and complete solution to deconning. If humans want to camp there are probably camp configurations that will allow it to certain extent. Old habits hard to break and all that. Not to mention there will always be the dumb players who don't get armor and get head pounced in their own base.
Anyway, I've got a suggestion: change the sound on the turret fire for 1.2. Something a bit lower perhaps, coarser, more rough, more "mean" that the 1.1 sound. I think that FPS players base their behaviour on all kinds of external stimuli and sound makes no exception. The coarser sound should serve to get across the feeling that the turret damage is different now. It would help aliens adjust better by linking the different sound to a different set of reactions and create a new set of "muscle memory".