I really don't get all this repeatability stuff, surely there are better things to do, if you like games that much play a new one?
I know I'm the sort of person that requires fresh stimulation so I may be a little biased but I still don't really get replaying something you've already played and know the outcome, the argument of 'different paths' is a pretty thin vale because ultimately it's still very much a similar if not the same experience.
I agree, the best games for replayability are the kind without a real 'story'. Strategy, Racing, Beat'em'ups etc are best for it imo.
There are occasionally games whose quality surpasses that of games for years to come. That's why people go back to them. An example would be FF VII. I don't think (opinion) there's been a better FF game since.