It really may not be for everybody.
Some people -- I'm one of them -- do want to be "other-optimized" in the sense that we want to know "how we're doing," generally, by the standards of other people, and we're willing to try meeting an external set of challenge goals. Maybe it's an age thing; I am not old enough that I think I have my life figured out and that I know what "works for me." A lot of things are still in flux, so I'd be willing to learn entirely new skills and add new identities. That seems to be common for people in their teens and twenties. I wish somebody had shaken me and told me "No, seriously, learn to program NOW" when I was a lot younger. I expect there will be other things that I don't yet know I will want to be good at. This "leveling" business seems like a way to facilitate the process.
I'm pretty much behind the idea of leveling, actually. Coming up with a coherent, stepwise map of how to get from a layperson's ability level to mastery of a certain topic seems like it will have all sorts of benefits. I just think we can do a lot better than asking an authority on a given topic what they think everyone should know about it, to figure out which steps should go first or what should be considered a very basic level of competence - I think we'll end up optimizing for the wrong things, if we do it that way.
I just got this random idea that people who want to become better at life could benefit from a common scale of "leveling". No, I don't mean vague Lesswrongey things like "changing your mind". I mean a set of concrete criteria like "you qualify for level 2 if you can do 5 pull-ups, have solved 30 Project Euler problems, and did 10 cold approaches". Obviously there would be separate ladders for different character classes, but not too many. Also obviously, my example was a bit too high for level 2. So I guess I really want to ask some meta questions here:
1) Do you think agreeing on a common leveling scale would be a good thing for a substantial subset of LW users? Would you feel good about leveling up and telling other people about it on LW?
2) Is there some good way to determine leveling criteria that are neither too high nor too low? Maybe make an intermediate scale of "experience points"?