I've found some issues with this. 6 years late, I know, but still.
First, when the AWACs is patrolling an area, it seems to continually rise in altitude, reaching heights of stuff like 600,000m. This is kinda silly since the real life AWACs plane only has a service ceiling of 8,800m. I believe the altitude also causes a problem with the AWACs detecting things in its radius, but I'm not certain.
Second is that the AWACs slows down any squadrons it's with to a crawl. Yes, the real life AWACs isn't very fast, but this highly limits the plane's usefulness in-game. Even if it's with a squadron when they engage the enemy, the plane doesn't show up. I know that it's because the AWACs has no weapons, but I think it should be given access to a single cannon slot. If possible, maybe even make it so the cannon is rear-facing, making it a poor choice in tackling UFOs and only really useful for firing a few shots at a pursuing attacker. I'd edit that in myself, but I don't know how to make it work right.