One thing that I have yet to see mentioned in reference to the DR1 vs Camel is that the Camel fly's considerably different at 10k.
Now I'd strongly agree with anything that would get players interested enough to climb to that alt.
(hint big silvery gas bag with cabin hung below) Ideally it would have waypoints like a task group, user mannable guns like a task group, and waypoints like a task group.
Like Task Groups in WWII arena's it would be a fight starter, and if it cruised at 10 or 12k, well the planes would come up to meet it, defenders would hang out around it, and you'd have your 10k furball where the camel has a chance to beat the DR1.
And of course adding more depth to the current setup would keep players in the arena longer, increasing numbers, increasing fights, etc etc.
It doesn't take a lot. Last year at AH con 6 of us logged into the WWI arena to kill an hour before the evil Claw Mission. By the time we left the WWI arena had over 50 people in it.