Cheers. I'll wait patiently ^.^ lol
FB rotation only exists in Unholy, not in Frost (makes sense^^), but maybe we've to adjust it a bit, there were some changes related to the FB rotation which hit with 5.3 (missed these changes)
So u can set up in frost whatever u want, u are not able to switch the rotation (it is displayed there cause we have no way atm to hide settings not related to the current specc) cause the rotation switch method is not implemented in frost (no matter if u use DW or 2H)
in FB rotation there is a different priority for some spells cause u leave the traditional way of spending your unholy runes
in fb rotation u try to extend the duration of diseases by using deathrunes for festering strike instead of using them for scourge strike (only exception if u have a short burst phase ... here u go for traditional way of spending the runes for scourge strike)
u should test both ... normal PVE and FB rotation, they are switched by pressing the hotkey for rotation switch (should be printed in the wow chat window-> green FB enabled (or whatever rotation u set in the config), red-> custom rotation disabled/playing normal unholy rotation)
i hope i could answer some of your questions
I'll try out the unholy when i'm at home, but i think alxaw already tested it and it should work.
The difference between UH and Frost is (in my opinion) that u have long periods of autohits waiting for runes/proccs, where frost is much more procc related and u could hit a button all the time cause it is blinking for ya, so yeah sometimes u think it is doin nothing (when it tooks 2 or 5 seconds until the next spell is casted only because we are waiting for a better time to cast 2 or 3 things in a row), but in general the rotations for UH should be okay