The complaints, I guess, are not mainly due to the things done, more what is not done.
I think the only ones getting an underwhelmed upgrade are those on R10 and dont jump to heights about using another DAW to get better workflow. I personlly dont like the workflow of many other DAWs and would love core adds.
I am just as many earlier versions, not that excited for personal sake.
Another part of me can see that the Rack as a plugin is somehow a must at this time. I just think it is a bit odd that it takes all the praise and focus in the announcing of R11.
It could have come with at least something bigger adds on the core of Reason as a standalone DAW. That may come or not in an point update, just that it is impossible to know, so for now, it is the waiting game again.
My hope in the meantime of waiting, is that the Rack Plugin thing will get a big flow of new users and make the RE shop blossom, the RE developers prosper more, while at same time allowing prices to drop, or the sales to be generous.
And with all that flow of new resourses, the RS team will take also the core Reason to higher levels in a pace faster than expected, as well as developing Reason on ipad (which I do not have any)
I am quite sure the graphical resolution and other critical things are to come, as much as that is mentioned here. I am only on laptop so have no clue.
Time will tell. If as I hope, or I am already excited about R12.