For buff statuses I can set a load condition for "unit role" and "unit class".
I'd like to be able to set this on the "Mana&Power" statuses in order to see blood dk runic power (and not dps) without needing a weakaura to track it.
Would this be possible as a feature (or does it exist already)?

Try out 2.2.0-beta.
New load conditions have been added to mana and power statuses, a new manaalt status has been added too.