Sorry, but they are still seen as "good", or being "from heaven".
I'll tread carefully here, but a big part of Christianity is the term of Justice, Righteous Anger or righteous indignation. Most people who understand Christianity understand that the terms fear, jealousy and anger when applied to God's servants are not incompatible with good of holiness. Too many people see things as solely Jesus' "hippy" outlook, not the wrath of Archangel Michael, for instance (or even when Jesus had his few anger moments).
My point is, angels are still commonly identified with the Celestial Realms (or "Heaven") and servants of good. It doesn't make sense for them to mess with that archetype to be a "generic god servant".
Speaking solely from expectations and the use of the word in common vernacular, I'd rather they use a more neutral term--hell, I'd accept daemon or divine spirit. (I'd say Archon but they've already got a use for that).