What about a spec like
this for those who might not want to deal with an uncontrollable ghoul?
The idea would be to get the biggest Death Coils possible. Since not using a ghoul (or popping it right before a pull and hoping it lasts a few seconds before getting owned) frees up a glyph slot, the IT glyph becomes a somewhat attractive option for Blood, due to the extra RP generation.
Since Blood seems to be remaining about spamming HS, thus it will be pretty GCD-limited, you'd probably need to stay in Unholy presence (unless the extra RP from RPM gives enough of a buffer that you can DPS in Blood presence without sitting at 130 RP and wasting it).
The last 2 points I put into Annihilation just because I didn't really know where to put them - I figured 2% more crit on melee abilities is better than 2% more strength. You could also put them into Icy Talons for 8% more haste, dunno. But Epidemic isn't really necessary with this build since you'll want to cast IT as often as possible for the extra RP.
Again I have no idea how viable this is, never really played Blood much aside from leveling. Just seemed like a decent option for those who don't want an uncontrollable ghoul that will have more survivability, but less DPS since it won't be getting a lot of raid buffs.