4.11 - AI debugging

[robday]

Recently I've been playing a USMC campaign at Iwo Jima and on a ground attack mission my flight were tasked with striking enemy bunkers at the foot of Mount Suribachi. The DGEN system routed us in from the opposite side of the mountain to the target, resulting in most bombs hitting the side and summit rather than the bunkers! I worked around that by opening the mission in FMB and altering the approach to target. (DGEN can be quite stupid at times. I've seen AI Stukas start their dive at as little as 1500 meters)
The main problem is that on subsequent passes my AI companions make attacks from angles that lead to them crashing into the side of the mountain!
Can anything be done to improve terrain avoidance?