The only combiner i have out at the moment, is the foc Bruticus. He is in combined mode.
Currently space is at a premium and i have a rotation system for display.
i i had the room and could afford it, i would be definately into this idea, devastator, defensor, menasor, predaking, bruticus, superion, Piranacon,......where to draw the line????
As i am still in the conceptual stage of my g1 collecting, I think i would only have the combiners combined, as they were designed for that purpose.