i thought gaurds were very useful. yes, most of the time they're very vulnerable, but only if u leave them alone, becuase if u do enemy air will own them. that's why you have to support them. it's the same with battlecruisers or carriers. they can put up a fight, but in the long run they'll lose unsupported.
guardians are the ultimate noob killers, you can get a lot of them much faster than carriers and bcs and against noobs they are just as effective.
I agree with both of you that Guardians against newb players is game over, many players just don't know how to properly react to Guardians.
to take your "flying eggs" idea literally... how about giving the morphing cocoon the ability the fly?
Flying egg's? , I think that they should be quite weak when when destroyed / killed all this acid get's released like to keep whatever is in the egg alive but it's deadly to armor and metal like so it can burn though it and to the skin , just a thought for an abilite sort of a thing for the defenceless egg
2 is just enough, i think Blizzard should simply revamp both evolutions into something more interesting