survival hunter for 25man raids

Ok since we are about to start the "great" 25 man raids and after a gruul raid with my hunter this came to my mind.
I recomment having a survival hunter with about 600ag, 30% crit unbuffed for raids. Not only great dps but also expose weakness will boost a lot physical attackers(even tanks). So what i say is having one retalent and gather gear for it. Would love to see one in raids and surely everyone would apreciate.

A only raid spec could be this:
http://www.wow-europe.com/en/info/basics/talents/hunter/talents.html?0000000000000000000000550201205000000000033301000500322300530350

Yes i agree with this because hunters in 25 man raid are just raid buffers go go afk auto shot crit etc. and its a quite nice build.