A comment about the learning curve - with the membership program, introducing new features sequentially over time rather than in one huge update should make it easier to keep up with new features.
Also I'm biased in favor of the additional content you get because I was involved in creating a lot of it, but several people have commented on how much like the new amps and FX chains...so I don't think I'm alone.
I also think Dan Gonzalez's new IRs for REmatrix are very useful additions. There are some great room sounds in there.