I doubt this is a 3.0 issue necessarily, but an issue in general.

These creatures, despite appraising harder than warklins train my defenses infinitely worse than them. This is with 4 on me attempting to let them do their thing. The reason why is they are spending more time deciding on if they want to fly or not, so at any point I really only have 1 or 2 on me.

Can the logic about when they should fly be repaired? Its a bit strange that they engage me, attack me ONCE then take off and hang out in the sky for about a minute before coming down, where they might attack me once or twice more before flying again.

Are they just trying to pass the time or kill me?

So bump them up another hundread(or more) ranks to make a gap between them. Their stuns and debuffs are fine, the knock downs are fine..the fact they arnt attacking about 1/2 or 3/4 of the time they are at melee with you is really harsh however.