Q) So T10 4pc is pretty awesome, I should just stop using MB right?
A) Not so fast there. It's not that simple even when it is... that simple.
Firstly, lets establish if there's even a theoretical DPS gain from dropping MB. Go to this link, open the spreadsheet, check your stats on Armory and get either a Yes or No.
http://elitistjerks.com/f77/t84746-s...riends/p7/#168
If you get a No - keep MB in your rotation as outlined in the Rotation section
If you get a Yes - yes, you can theoretically drop MB from your rotation. That said here's some food for though and pearls of wisdom from Griemak @
http://forums.worldofwarcraft.com/th...7476&sid=1#159
Q u o t e:
There are ISSUES with dropping MB:
1. Error, network congestion, server latency, hardware lag, reaction time, attention deficit... etc. all contribute to make MF's DPET higher than MB's. These are the same environmental variables that affect MF's performance more than MB.
2. Channeling is not easy. The more MF's you cast, the higher chance you have of screwing it up by losing the third tick, waiting for the channel to finish adding more delay, etc.
3. [nochannel] macros will result in a DPS loss if you drop MB, the delay caused by [nochannel] macros will cause a lot of "downtime", this "downtime" can be reduced by casting [nochannel] less, AKA: MB.
4. DoT uptime can suffer. Currently, Simulationcraft is showing an overall DPS loss when dropping MB. One reason among many is that the DP and VT uptime suffers due to the filler spell, MF, being a longer cast to finish before refreshing the DoT than using the binary filler spells of MB and MF. (can be negated by clipping MF at 2 ticks, requires higher precision and enters in more risk)
5. It's boring, attention can be diverted, the mind may wander... precision in casting could suffer.
Of course, many of the "issues" can also be gains if these issues plague your shadow priest today. For some, MF can relieve the congestion and confusion of the MB cooldown, upping your personal DPS. Just remember, that fixing these issues regardless of dropping MB or not would have been a DPS increase as well.
I believe MB is safe, not due to Blizzard's design, but rather our error. It is through lag and latency that MF's DPET overtakes MB's, the same lag and latency that effects MF more than MB. The error that makes MF superior, supposedly, is the same error that can lower our overall DPS if we do drop MB