The lack of a Cybran durability upgrade has been discussed a lot. They lack a Nano/Shield upgrade to boost their HP. Thinking about that, I had a crackpot idea:
What about making stealth also increase manoeuvrability of the Cybran ACU? Make it faster and make it turn faster. That way you could dodge more, resulting in a virtual HP boost. It could also be an interesting combat upgrade for offensive pushes, because your ACU could outrun the opponent's ACU. I think such a move could lower the gap between Cybran and other factions for early midgame combat ACU capabilites. It would also be an interesting and diverse buff, imho true to the Cybran style.
But like I said, it's just a crackpot idea, still worth brainstorming about though.