Fair point on the hitpoints. In general, there's a lot of changes I despise with new monsters, and a few other rules changes, namely the removal of "magical weapons" which imo causes more problems than it solves. Still though, I really don't like the idea of caster monsters having boatloads of...
I don't care how "easy to run" the new statblocks are, they're downright horrid. More hp? Artificially inflated initiative? Fiendish burst??? It's obvious not a single thought went into this redesign...