What a mess, I hate it.
I'm sorry I can't hear you over the sound of Wrath of the Lich King.:D
The idea of bringing back older raids is cool. The idea of giving the Sylvanas story, along with the mutilated story of Kel'Thuzad, any more attention is not cool. Running this raid as a fated raid is fun up until KT/Sylvanas.
I don't see any problematic combinations this week. I'd say as long as the final boss doesn't have the soak affix everything is fine.
Barrier on Painsmith could be interesting if it pops up and shields the balls. A guildee of mine told me it was only shielding the boss in previous weeks not adds. Don't know if that was true and if so if it was intended or not cause it says "all other enemies."