Best you can do is some targetexact macros for the rares of interest to your faction.
Example for alliance player
Code:
/cleartarget
/targetexact Kar Warmaker
/targetexact Muerta
/targetexact Ubunti the Shade
/stopmacro [noexists,dead]
/cast [exists,nodead,harm]Tapping Spell
Dalan Nightbreaker
Disha Fearwarden
Mavis Harms
are the ones for horde (enGB, you'll have to find their names if you're playing on non-english locale)