The idea is very good – not sure it will be easy to implement though.
As you know, I recently started taking chess lessons: one of the things that stroke me the most is the difference between a game annotated by a computer, and a game annotated by a strong player. Whenever I lose a game, I annotate it thoroughly and I have it analyzed by my teacher, who uses my annotations to understand my way of reasoning and correct my flaws. Basically, the computer analysis does little more than spotting blunders and missed tactical opportunities (which, of course, is much better than nothing!). while a strong player can do much more than that: helping you to understand your weak points, giving strategic advise and so on.
Reason why I think it will be difficult to implement something like this is exactly what you said – motivating a strong player to spend time to analyze games.
I’m not sure a “laddered approach” (you are 1600, review the game of a 1300 to have a 1900 analyzing your game) will work, mainly because you need to be a strong player tout-court to analyze in a useful manner a game.
To analyze your own games is a great way to improve your chess. Also, to have your games analyzed by a stronger player is a great learning tool.
I would love to see a data base of annotated games at ! It would be excellent to be able to submit your self-annotated games to a database and to have those games re-analyzed by a stronger player.
Why on earth would anyone do the time consuming task to annotate games by other players? Well, perhaps to earn the right to have one of his or her games being analyzed by a stronger player.
Maybe a first step would be a database with games annotated by members?