Alright, I like the idea of upgrading spawn damage and armor, this can replace upgrading the spawn number and level, and I'm with you unholy it will add an additional way for people to play the game. The question is how many stat points should it cost to make these upgrades?
I like those heroes, the spec ops is done (but I don't think he seems very much like a spec ops agent to be honest, I kinda just duplicated his original spells, but without the spawned units). I can make tear gas, but didn't the year had also take away mana? idk about afterburner, I'm sure it's possible for him to be able to only jump down cliffs, I'll look into it.
For assault level 3, how about a damaging or slowing ability, it seems like all of his abilities are to give him free reign over what to do with his enemies, but not any true damaging abilities. Could be something like a grenade or something of that sort.
Engineer - we can give the engineer the ability to build so he doesn't need the scv, I mean if we can do this why not? xD
Also, since he is the engineer shouldn't he build the units instead of calling them down into battle, I mean this would seem more like an engineer, building his backup on the battlefield, and I'm sure we could add some animation for building a siege tank and other such buildings.
I have been thinking about items, and effort you skip this and deny them just read on and hear me out. I was thinking that we could add misc items that can be bought at the temple when you are near it, these items would not increase attack damage, armor, or anything on the unit, but they will each have a specific purpose, like an item that lets you shoot down air, or something like that. These items would be there to give restricted units that can't attack air (or have some other restriction if we find any) a fighting chance against heroes like assault and special ops who have flying units. We can make different items like the air attacking one to make it so that special ops and assault don't have such an advantage over heroes that have no air attack (Or some other restriction, air might not be the only advantage).
We don't have to do this, but I thought it would be a good idea because I remember hatin the fast that as a warrior, the assault could just enter his drop ship and get away. This would give these units a fighting chance against things like that.
I might just be speaking in jargon again... Sorry if you can't understand what I'm trying to say.
None.