Yes, Blizzard should make changes so that such buffs cannot be used in Raids.
Let me elaborate:
Yesterday we raided MC in a new server which runs on Patch 1.3. I had the Onyxia buff and the Dire Maul Buffs.
Here's my character's stats:
I had 1470 Attack Power and 30% Crit. This is absolutely ridiculous. We are facerolling all raid content b/c of the buffs.
Even worse, before we do Ragnaros, we go into UBRS where a Priest MC's a mob there and then proceeds to buff all the raid via the MC'd mob with a 90 Fire Resist Buff.
At yesterday's Ragnaros, I had 153 Fire Resistance. This is absolutely ridiculous. This abuse of buffs and game mechanics has to be stopped. Back in Retail vanilla in 2005, few guilds -if any- used all of the above strategies but now that they are widely known, everyone must use them otherwise they will stay behind in raid progression.
Also note that my character above has got ZERO epic gear. If I had even full T1, I would have had much more AP and crit. This character merely has Patch 1.3 pre-raid BIS,