We have too little information if Roy likes players who play bigger than their size. In reality, would Roy pass over Brendan Lemieux or Jesse Gabrielle if they were perfect in each spot? We really don't know because he has never mentioned that. So we are leading to assumptions of what he might or might not like.
You don't need to be 6'3" to be tough, Rinaldo is like 5'10" and is one of the toughest guys in the NHL. I'm not targeting you RS, but just mentioning this if Roy ever reads HFBoards.
And as you know RS, Provorov is not a weakling in any regards, even if he's 6'0", it is not a weakness in his game at all. As I said before, Hepple could convince Roy that he is too good not to pass up on.