About the Zelot, I think that there shield should be more useful than just extra hit points... Meaning When about to attack you should be able to power up your shields and it actually work as some type of force field, Of course it should have some type of power bar but should last about as long as a defense matrix in sc1, That should be the case for all protoss units, except maybe the probes...

I also found it kind of wierd how an scv could repair air but not attack it... in the classic "scv Stack" against an air rush that would be useful. Most people use like 3 mutalisks to rush b/c there is no air def that early on in a game sometimes.

Why havent the Terran, came out with hover units?? I mean its a game set in space and you got tanks stuck on the ground? that cant get up a mountian? thats just not realistic for the games setting.

Oh and get rid of the medic... how and the H@#* are you going to heal units in space, you open up any wound out there and you will explode.

I have more but nothing is poping into my head at the moment.