I like Dana. I don't like the way he's always in the media eye, and always stirring something up (e.g: the Reem thing, the Loretta Hunt thing etc), even the way he conducts business from the little I know, but he was at the helm of the company as it came out of the dark age to become the mainstream entity it is today (and no matter what doubters think, it's good for the sport).
The guy gets shit on forums because he's successful, obnoxious, and a bit of a cunt if you go on some of the media attention he's gotten, but let's be real here, him and the Fertittas helped keep the sport alive.
That said, even with the potential for cross promotion increased and/or big SF names signing with the UFC, I don't like this news. We are now left with Bellator, Dream, and K1, the latter two being owned by FEG, a company plagued with financial issues (based on their well publicized non-payment of high profile fighters). Less competition is never a good thing, but we'll see how it turns out.