As long as the Substance Suite price doesn't increase I can't see what all the negativity is about. Is this the right move well time will tell. Good luck with the move.
It will increase because if you read the posts from Allegorithmic they made zero indication that pricing would remain the same in future, and they did not comment on if their product line would be merged with Creative Cloud. As of now we're okay, and with current licensees, but in future you'll see a revision, I can guarantee that. (I'm also not saying prices wouldn't increase if Adobe wasn't here, but I'm pointing the fact that we're going to most likely be hit with a much higher fee - increasing a bit each year isn't an issue, but not by hundreds of dollars)
I would find it hard to believe that pricing would stay the same, the merger would only make sense if Adobe is able to squeeze additional revenue out of Allegorithmic's products knowing that many studios have Substance as part of their workflow.
Out of the 200+ replies, majority of the concern is about Adobe's track record when acquiring other businesses, and their horrible pricing policies for their products.
On the plus side, if this goes down hill which I hope it doesn't, it will open the way for competitors to take advantage of the opportunity, and for new software to be developed. One of my friends had their studio program in house 3D texturing software already, so people out there can do it.
I'll wait for my subscription to run out in three months, then buy the non-subscription versions.