I love the idea of writing info of the front of the bag. I think if I had to look at the date I started a project every time I picked it up I might work a little harder on it. LOL.
Seriously, I think it is a good way to keep that info handy.
My tip is: I always make a working copy of my pattern so I can mark on it or whatever. The original stays in a plastic sleeve in my notebook of patterns. I'm only a little organized though. I don't even have them in Alphabetical order.