I seriously doubt it would be. While it would be interesting if it was, I do not think it ever would.

This is primarily because it's just so iconic. You see it everywhere, and it's about the only incarnation of Transformers that is ever referenced by other works. No other Transformers incarnation has ever been 'bigger' than G1, not even the 2007 movie, since that didn't manage to last for a year, and the toys shelfwarmed like crazy after it left cinemas.

The only way G1 would be dethroned would be if it vanished completely one day-all the toys, cartoons, comics, everything-and everyone somehow forgot it's existence. This is incredibly unlikely (unless some alien comes along and decides to do just that since it's a spiteful bastard), to say the least.