I'm reading Whirlwind, by Tillman, about the air-war against Japan in WWII. I had previously thought of B-29 missions as hundreds of B-29's vs. very few Japanese fighters, and so not a fit for a special event. However, among other things, the book covers the early B-29 missions, some of which involved unescorted B-29's at high alt vs. somewhat comparable numbers of late-war Japanese fighters, with outcomes not being lopsided for either side.
Do you think that it would be fun to have a special event of B-29's vs. late-war Japanese fighters where everyone is using air spawns to get up to higher alts?
Do you think it would be relatively balanced, with the altitude helping to offset that the B-29's have no escort? Do you think it would work best with B-29's without formations if the side balance were to be 50:50 or still with formations enabled?

If you want to do something which is accurate and interesting, set up a special event with B-29's at 16 to 20 thousand feet, with no "air spawn", which was the normal mission profile during the early months of the Korean conflict, loaded with 4, 2 thousand bombs, which was used to destroy bridges, substitute ME-262 for MiG 15's and F-86D's and you might have a very interesting special event. Plan it with no perk points required for either the 29's or Me-262's and I would venture to guess you would have a lot of interest. Substitute the ME-410 for F-82's, which were used to attack roads, tanks and other object's on the ground.
If you are going to have a special event, stop putting all these "rules" in the game! There were no rules in Korea and it would be a lot more interesting if the "Mig's" had to locate the 29's, same with the 86D's escorting the 29's. The Yak 9's were used as "scouts" and many were shot down by 51's and 82's during early months of war. Don't restrict the altitude of the bombers, or what route's they have to follow, leave that up the mission commander to decide.
Railroads and rail yards were another target which drew a lot of attention in the early months of the "war"
If you are really interested in setting up a special event, drawn up as I have outlined, I would be glad to help. Try to use Greebo's new crater map as a setting as it closely matches a lot of the terrain in Korea.