I've been playing EE a lot lately, mixing AAI and KAI. KAI never builds aircraft at all in EE, so it's a bit one dimensional, but it makes very good use of artillery and static turrets which compensates somewhat. As expected it doesn't upgrade mexes, and it also doesn't build any heavy powerplants (I don't know if it was E stalling though, I'll check later).
The only thing that hampers KAI in EE is the way it sees jammer/stealth units. This makes a lot of the URC units useless. One of the reasons I think the maphack is particularly appropriate in EE is the cameras, I often have every hill and chokepoint covered with one so I can see everything. KAI kills them all though.
Anyway, the only actual bug I have to report from that game is that if you give KAI some units, it just ignores them. I was busy upgrading my AI ally's mexes, so I gave him my small force of about 10 T2 mechs when it pushed forward for an attack, but it just left them there for the rest of the game.
EDIT: Also, the best part is I still haven't seen a single crash when playing with KAI.