I still have my doubts on the results, even if I liked Age of Empires III (although I do still prefer AoE II, and it's not only due to nostalgia, it's actually simply a better game). Just taking what happened with Westwood Studios for instance, some of the guys from WS formed a new development studio, namely Petroglyph, and their last project, Universe at War, is in my humble opinion a very bad game. I must say however that I do like and still regularly play Empire at War and its expansion pack Forces of Corruption. But overall Petroglyph just doesn't even come close to what Westwood Studios was back then.
I also have some hope indeed, I don't only see negatives in that, but forming a completely new development studio usually means taking completely new paths, or refreshing old ones, and that sometimes end up being just a bad decision. They are talented to make RTS games, so I do hope that they do stay on that track. However if they want to "improve" their formula I also wish that they don't try to re-invent the wheel at the same time (such as completely removing base building in Dawn of War II and still calling it a RTS game). My best wishes to the newly formed group, but I won't hold my breath for an Age of Empires II-killer within that franchise (I.E Age of Empires IV).