They already kindof let you do that, the thing I can't find any simple way to do is download all of my friends photo albums that I'm tagged in somewhere. I don't really take photos, so most of my precious memories are in other people's photo collections. If someone makes that I may well even give them money.
It shouldn't be too hard, just a few graph API queries and a loop to call curl, but I've never got around to it.
Since IFTTT (http://ifttt.com) uses the Facebook push notifications, you can actually auto-save pictures that your friends have tagged you in fairly easily. Granted, this is not for historic purposes, but will work from when you turn the recipe on.
https://ifttt.com/recipes/1717 is the original recipe that most people have modified that saves any pictured you're tagged in to Dropbox. I'm sure that it can be modified to upload all the pictures in the album (which you have access to).