I'd love to see the Albatross C-type aircraft. According to Windsock the CI and CIII were the most numerous two seaters in German service until April 1917.
Since i'm here with my hand out, i'll take the chance to beg some more. I'd love to see some more French two seaters, both early and late war. And, i've always had a thing for the F.K.8...
How about a two seater pack?