Personally I have a few thoughts on this issue. The first being that they are still on a .org domain. I'm not sure why it bothers me but it does. It seems like it goes against SEOmoz's values or something. It also seems like they are too afraid of the 301 to switch it over. Now, I can't say that I would do things any differently, and it's easy for me to make commentary when my paycheck isn't riding on it. However, what does their reluctance to 301 and the fact that they are on a .org domain while clearly commercial (there's no set rules etc for the .org but I would bet most people expect .orgs to be non profit etc) say to potential clients?
Don't get me wrong, I haven't had a lot of interaction with Rand or any of the SEOmozzers but from every indication they are fantastic people and terrific SEOs. That issue just bugs me.
As for the premium stuff, I think they should have just put tools behind the subscription wall rather than content as well. The popup is really annoying but only happens once every so often and the trouble is, they work. I've got a site that has a popup for my newsletter and it's like people can't help themselves but to fill it out. So, I can understand their use of it.
Also I think their YOUmoz feature was a stroke of genius and needs to be emphasized even more. I really think that's a potential goldmine that they are sitting on, they just have to figure out how to tap into it.
Not sure that answers your questions at all but I've been wanting to get that .org thing off of my chest for a while now.
