I don't mean to suggest it would have been similar to them culturally, or that it would have evolved into a copy of reddit or twitter. It would have still been delicious, in the sense that it would always be a booking service (as long as they never went all in with Delicious Stacks, which I think nobody remembers except me). I also don't doubt that, at some point, it probably would sell it's soul and lose whatever signature personality it had according to the main users. But it would have remained useful, grown, and been one of the main places everybody goes.

Even with the loses you identify, it was an invaluable asset that could have kept Yahoo relevant.