No. Every Korean and top foreigner to get their hands on it has complained it's too easy, and that the new engine severely limits cute micro tricks. There have been a few complains about team colours not being as easily distinguishable and units being hard to spot in a crowd, especially in low resolution VOD or streaming form (the way all non-Koreans watch Korean pros). Blizzard said they are working on "breaking" their engine to allow for things like muta micro, but as of this Blizzcon build, they are still not successful.
The goal is to make this possible again in Starcraft II, but so far it's looking bad. Here's a 1 minute clip of mutalisk micro:
http://www.youtube.com/watch?v=HJVait72LOU&feature=related
That technique revolutionized the way Zerg play.
When mutalisks can be glitched into moving as a stack like that, it is harder to focus fire the weak ones. By microing quick swoops in and out to let them take a shot at a marine, they can kill it in one hit and be turning around the instant after they shoot (takes timing and practice). When they return, the marines reacquire random targets in the bunch, instead of continuing to fire on the same one, and you can't order them to pick on the weak one since you can't really select it out of the bunch. It also allows mutalisks to fire while moving, which they normally do not do. This technique, with proper timing and good angles (angle that lets you hit a marine but the minimum number of marines can shoot you), Zerg players can really slow down a Terran, or outright destroy an inferior player. It is a technique that requires great skill to pull off, and my Zerg playing friend has tried for months to do it decently with little success.
The difficulty is making air units capable of that type of micro again, without making it the default attack mode, so that it requires skill to pull off.