It was fascinating to see how crippled the Monkeylords were by Markeli's Omni sensors. Mountain had a very difficult time sneaking up the Monkeylord death rays on the Fatboys due to the superior range of the Omni Sensors. Meanwhile, the Fatboys pounded anything into oblivion that was within range and not protected by the mountains.
I would have liked to see Mountain give himself a little more breathing room by moving one of his Monkeylords up to the second gap from his base, as it should have given him enough mountain coverage, as well as a better departure point for making attempts at the erstwhile Fatboys. Understandably, keeping one near to the base would be necessary to stop incursions dead.
Otherwise, maybe a T4 gunship to complement the Monkeylords? The T2 bombers were effective against the Fatboys but just kept dying to the mobile anti air. So it might have been worth a try to see if a T4 gunship would have survived better. Plus a T4 gunship would have allowed the Monkeylord to take advantage of certain terrain features without worrying as much about base protection.
The game is long, about 1h 15min