In terms ofthe AN225, at a time when its imperative the flight is to/from MAN, then im sure they would accept it. Yes it was a bit of a logistical nightmare, but they housed the AN225 for a couple of nights and the airport operated its normal schedule around it, so they *could* handle it again.
In terms of other code F aircraft, the B747-8 is in that category and CX cargo have them on order. CX seem to send us the new aircraft and the MAN flights are well patronised, so they could send the B747-8 to us (I dont know which one it is, but a stand has already been marked up with a B747-8 stopline.