I think it would be a decent idea. Perhaps it would be an automatic mission destined to go after a certain factory. However, it would be announced so all 3 sides are aware of it . "Attack mission launched from a33 ". They could climb out to 20k or so like krabby mentioned. I think the diamond formation would be appropriate, 8 bombers in total. B17s or maybe b29s

Perks would be awarded for killing them, since their aim is quite accurate (it is said they trained 999000). An 'auto' mission could be launched every 2-3 hours, that would go to a major strategic target. Like the AI would level 20% of an enemy factory if the factories weren't defended. Each side would have a set of bombers with 2-3 escorts that would take off. So Knight AI to bish, Bish AI to rook, rook AI to knight. Then it would switch each time around. Rook to bish, bish to knight, knight to rook etc. Every 2-3 or so hours (2-3 is just a number, could be changed to 4-6 or whatever).
Since there are only a handful of dedicated pilots who are bomber-type, and many of them are spread out across the 3 sides. I think this is a good way to get a nice sided bomber mission going, to get some of that combat that HTC boasts of on the main page.
Players could then join this auto mission with the AI and defend them to the target, or simply use it as a distraction to attack another base, or completely ignore it and do their own thing entirely. Like frolicking in the dense forests near bases, waiting for m3s to pounce on, or flying up to the moon to see if a cow really did jump over it.
Either way I think this is a good wish and could be used to start combat and give good potential 'burst furballs' that would initiate combat and give something to defend. Then give enough time for things to heal over before starting over again. That way one side isn't bombarded by another via AI.