I wouldn't say the negativity is simply based on subscription, but rather subscription for software which appears to be just C2, online.
There have been a ton of feature requests over the years, and a lot of those were responded with "that will have to wait for C3" so i think its natural that people were hoping to see feature X, and true they may now be in a better position to perhaps add feature X in the future, but i tend to pay for whats there now, rather than what might be added later.
I do agree though that under a subscription model they will be expected to offer much better support.