Well, Elderscrolls has won 'game of the year' 3 games in a row.. So I suspect the next one will just be as great. They do continuesly improve. As for no bugs? :/
Don't take "Game of the Year" too seriously. It's kind of like High School Journalism awards, where something like 40% of the schools are awarded "First Place". If you don't make at least "Second Place", it means your school is in the bottom 10-20%. With "GoTY", there are enough categories to insure that almost any half-decent selling title gets one of the awards.
"The potential is massive", just as it was before each of the other games. At least TES II got the RPG part right (despite a lot of repetitive and simplistic "procedurally generated" content), and MW didn't totally butcher the RP aspects to offer a bit more of an action/adventure side and a truly hand-crafted world. Sadly, each of the following games gave up a large amount of RP content (choices with consequences, true advancement instead of a treadmill, and a lot of character customization options) in order to boost the combat and adventure aspects.
I don't see the platforms as being the limiting factor; more like the accountants and marketing people who are out to try to sell "general purpose" video games to everyone and their grandmother, rather than designing a game for a specific market that they already have a solid hold on.