Gotta disagree with you there. IMO Limbo was mostly polish with little substance (and don't get me wrong, I think it does a great job at that, it has amazing aesthetics).
FWIW I've revisited Braid multiple times, but don't think I'd get anything new out of Limbo if I played through it again.
Ha! Very true. I've sunk well over a thousand hours into Dungeon Crawl Stone soup, and hundreds into Spelunky, Binding of Isaac, and other roguelike/lites.
I don't think I'd consider them better games than Braid, however, they just have (much!) more replayability/content.
(I would consider them better than Limbo, but that's neither here nor there).
FWIW I've revisited Braid multiple times, but don't think I'd get anything new out of Limbo if I played through it again.