Art, coming from you that's a real complement. And, yes, I was greatly inspired (as many have been) by your 1/3 scale EIII. I'm not set up for anything that big at the moment but I can imagine that my next project will have at least a 72" wing span. Since it's highly likely that that next plane will be one of the WWI two-seaters 1/6 scale might still be OK. Here are just a few of the planes that spring to mind:

Albatros CI or CIII
Rumpler CIII
Bristol FE2b
RAF BE2e
Whitworth FK-10 (now THAT would be a REAL project)
Hansa Brandenburg CI

And of possible single seaters:

1/4 scale Sopwith Camel (or possibly are REALLY SCALE Pup)
1/4 scale Albatros DV or DIII

But I'm definitely leaning towards the two-seaters.