It doesn't drop anything so, there really isn't a real need for a standard tagging system is there?
Steps to tag the Sha of Anger
1) Get a raid of 25+
2) Find where he spawns
3) Tag him
4a) If you failed to tag him move away and let whoever did tag him wipe or kill him
4b) If you tag him kill him and get loots
5a) Rinse repeat till successful (He has like a 3 hour respawn timer)
Well this would be okay if it wasn't essentially a replacement for Baradin Hold. It just gives you a little sack of treasure or a chance at a mount and that's going to put people into the habit of doing it every week, except it's really inconvenient.
It just seems that everyone who clamored for the return of World Bosses is matter of factly defending them now. There's really no reason loot should be based solely on tag. There are better systems to do it, and especially when it's a boss that has no competition for loot.
The only real reason to compete for this boss is entirely artificial. It's not rare, it doesn't have loot, the only thing that keep it "competitive" is that only one group of people can get the credit. Just because they designed what is essentially a loot pinata and then went "oh wait better make it tag based", doesn't make it good design.
All the OP is asking for is that this meaningless loot pinata fulfill it's true destiny.