i have a few idea's.
When i game, i normaly watch TV. not that i am so pro that i raid while watching, but i like to hang around the city's, chat, quest a bit here and there.
The channel i watch mostly is the discovery channel, with all the stuff like how things are made.
If blizz would make a documentary about the game, for TV. about how the game whas made from the start, compleet scratch! and how it evolved, major events, the start of an idea, and more. that i would like to see. since everybody knows WoW in some way, they either love it, or hate it, yet they all know it.
and ofcourse a thing like a nice quest, possibly rewarding a title, that simply implies the age of the account based on WoW's #th Anniversary achieve. like if someone had the 4th, they would atleast played from the start of achievements. roughly at 26-11-2008.
and a raidboss, looking like the avatars of the major designers. like ofc a few american icons like the ghostgrawler crab, the floating skull. and ofc, more important the EU mods! (aint i cheap :P ).
and to me, the loot i get from it, is not important. the feeling that we as a realm, have to work to get it. like the old resource from silitus, that would be lovely to get acces to the bosses.
my 5 cents :P