Catman -- American already does. They have electronic stickers. No more carring around paper versions (unless you are flying Reno, Canadian or Midway in which case you can have AA print out stickers for you).

The only problem -- they can't "forget" to collect the stickers (I had many a free upgrade when on a connecting flight they gave me my boarding pass for both flights but only collected stickers for one. I also had a situation where the gate agent did not even look at the reservation -- just printed the boarding pass, told me to enjoy 1st class, and I was off with no stickers collected)