Viking, ignore the Troll
Funny business aside, I wouldn't mind seeing the K-7 in the sim. Oleg K-7 -- not a chance, but its a great idea to go play with. The K-7 aroused huge public interest in Stalingrad before the Crash. Even more interesting is Kalinin's advanced designs in general.
The best historical gunship was Sikorsky's Ilya Morametz (sp?) biplane bomber, the "B-29" of 1915, with huge framed glass nose and a positive kill score against German fighters. Remember the Eastern Front WW1 sim that was being developed around a WW1 Sikorsky fighter, but the developer joined the current Maddox-esque WW1 sim team (don't know them, online only lala). Sikorsky super bomber would be a crowd pleaser in a WW1 sim.