It took many afternoons over a month, but me and my daughter "worked on the minifigs" and eventually ended up with this: all of them put together by the book, as they should be. We used brickset.com (an excellent site to keep track of your collection). It helped us find what's missing and what extras we have. The total count is 470.
This is not much of a MOC, but it's nice to have it preserved like this (and it can be used for bragging rights :-)).