It's a good point that you can now have much bigger clumps of units, however I will respectfully disagree about the difficulty in hitting mutas in the original game.
A good zerg will only ever take serious damage with his mutalisks if he screws up badly, or you have something like 5-6 templars.
As I said, I'll reserve judgement until I've actually played. People don't seem to get HTs very often from the gameplay reports I've read, but that is probably because of the scarcity of gas more than anything else.








