I prefer the bosses requiring me to be more creative so that I can kill them in order to get gear than spending 100+ hours farming gear off of normal mobs so I can spend 10 minutes killing a boss that is trivialized by said gear. Boss difficulty increasing > Grinding for 10 hours a week, at least that is my opinion on it. Also have to looked at the crafted gear for 5.2? Some of that stuff is BiS until Ra-Den. I'd say that isn't trivial considering the top guilds in the world still have yet to kill him while it is now the THIRD week that heroic ToT has been available. The "lost" aspect of raiding is the grind, the aspect that replaced it is skill.