There is another reason to change this,: the single name below the message sometimes gives the impression that the suspension was a lone decision by that moderator. While many suspensions are decided by a single moderator, those are usually the completely obvious cases. In any of the more complicated cases multiple moderators are often involved, and sometimes a few SE employees as well.
In a few moderator messages I've explicitly added all the other moderators to the signature as well, because we all decided it together and we knew that the users would complain about the suspension.
Signing the messages with "moderation team" could help to avoid the impression some suspended users have that a single moderator is "harrassing""harassing" them.