Now, I don't know about you, but I never EVER got the infinite buff duration thing to work. I believe I did it correctly, but it might be due to wowlegion being a bit more difficult to hack then others, the fact it plays on 2.2.0 patch, I don't know, but this got me thinking of possible Hacks that could be possible, client sided or not.
Now say you could keep any buff on you, by searching the buff and locking it, it would stay until you unlocked it or got disconnected. So imagine you kept Power Word Shield on your priest forever. Now that'd be awesome. Or if you had a Rogue and managed to keep the stealth forever. That would mean that you couldn't be targeted, yet you'd be attacking other players/NPC's freely....
Hmm actually I bet these are all server sided, but netherless I believe there is a possible super ZOMGWTFBBQ hack that we can do without having GM powers. The talent fill in WPE pro trick is just a start, and I'm sure we'll get a nice hack that would actually work for once.