No i really don't. I'd rather see Altior win two more Champion Chases and write himself into the record books as the best 2 mile chaser of all time.
I always revert back to Azerttyioup when people bring up this suggestion, people did it with Sprinter Sacre and now they're doing it with Altior. I honestly think that Azerttyioup was better than both Sprinter Sacre and Altior but when they stepped him up in trip for that King George it ruined the horse and he never recovered.
I do sometimes think people sometimes forget just how hard a race a Gold Cup is, horses like Imperial Commander, Bobs Worth and Coneygree were never the same after winning their respective Gold Cups, even Denman despite that heroic Hennesey win and being placed twice never recovered after that win in 08.
Going back to Sprinter Sacre, they resisted the temptation to send him further and he went out on top as a superstar. Personally I hope to see Altior go out the same way