First off, the Ai seems to have no build time restrictions. I have kirovs coming at me before I have even started building my lab. This was on normal. Second off, the Ai seems to have a massive money boost. Lastly, yuri clones or as they are called "epsilon adepts" don't auto target enemy units over walls. In the original yuris revenge the yuri clones auto attacked over walls. The drawback is that you can no longer set up 6 or so adepts in a tiny box and use them as base defense. And because lasher tanks cant take rhino tanks the epsilon team fails early game due to that interplay. Of course, you can let the adepts sit out in the open but that is throwing money away. Also, the epsilon stealth device causes the game to lag badly. The russian kirovs combined with their migs are a pain in the tush. Base defenses cannot handle the combo under any circumstances. A single kirov can tank an unthinkable number of base air defenses while the migs dart in and take no return fire while they knock out the base power. That is unbalanced. There is no defense against it, no way to counter it and it basically comes down to a whoever launches kirovs and mig squadrons first gets an insta win. And that always happens to be the pc because of its insanely low build times. And its infinite money supply. You shouldn't be able to pump out 20+ rhinos in the first 4 minutes AND have a super well developed base. Oh and scale the game based on delta time The way you do that is this:
(obviously pseudocode)
double time;
double deltatime=1;
time=system.gettime()
game.update(deltatime)
game.draw()
deltatime= system.gettime()- time;
update(double deltatime)
{
multiply delta time by the change in position of individual units.
}
what this does is it scales game speed off of cpu power, and not on real time elapsed and so the game speed will stay constant and not speed up or slow down based on the number of units in memory. The mental omega mod seems to not scale based on time as well.
TLDR-
Fix the auto attack for epsilon adepts
Remove Migs from Russian arsenal, or lower their damage
Fix the unlimited cash and low build time for ai
Scale to delta time instead of cpu speed
Fix the stealth sprites for buildings. Perhaps, put a dark cloud or dark eye above them.