You may think that but id say most others would disagree. The running game requires what Blitz has , stamina..add the height for marks and Blitz has a package of talents that bring him to selection before GHS. Sure GHS is probably a superior footballer , especially in a lesser comp but in AFL Blitz has the edge.I think GHS is ahead of Blicavs, for one GHS can play mid (and get more than 17 disposals a match) as well as forward where he's far more capable of taking a contested mark and kicking a goal than Blicavs.
If Blitz is to be replaced it would be by a better footballer with better attributes. Lang and Parfitt seems likely and as Menegola showed , if you have what they like its possible to get selected before GeorgeHS