If they ever made a Transformers GI Joe crossover I'd love to see a Transformer U.S.S. Flagg - especially if it were the same size as the original toy!! They should make it Fortress Maximus/U.S.S. Flagg!
For those who may not know, Fortress Maximus is 78cm long in battleship mode and the U.S.S. Flagg is approx. 228cm long!! It would be hell expensive toy... probably a smaller version of the Flagg at the size of G1 Fort Max would be cheaper (but still expensive)
Mmm... pipe dream fresh...