To really be useful, bagging and tagging has to be pretty specific, like "windshield interior trim" etc. It doesn't do much good to just throw everything your remove from the cab into a bag marked "cab."
There are just too many different size screws, and I agree after 25 years it would be difficult to remember. Heck sometimes I forget things done before the weekend.
As far as water pump and pumpkin bolts, a little non-hardening gasket sealer on the threads will prevent leaks.
