Originally Posted by Griefknight

No, I wasn't taking Rune Strike into account and it seems that I overlooked it completely. When I do take Rune Strike into account it does seem to be a better choice to take Scent of Blood but trying to find what I should take points out of to acquire it is somewhat challenging. You can take a point out of Rune Tap and then the other two out of Two-Handed Weapon Specialization or all three out of Subversion. Although neither matters when you view Ulduar as a place where we need to prioritize survivability over threat until its on farm and we start to work on hard mode specs. Then again some may view that keeping maximum threat to burn through a boss (or phase) quickly would be important too.

I'd say if you wanted to maximize threat that getting Scent of Blood would probably be a wise choice. If you wanted to maximize survivability then getting Mark of Blood, Improved Rune Tap, and Spell Deflection would all probably be worth it. I noticed the change to WotN making it so that any attack that does less then 5% of your health would not affect WotN, this change doesn't really fix WotN on a fight like 3D but hopefully it proves to be worthy in Ulduar.