Hopefully this is not too difficult to implement.
Here is a post that discusses and indicates not currently an option: Dynamic Query filter for groups to exclude
Here is a post that indicates not using regex but shows the back end logic uses SQL "LIKE" and thus, should be able to use NOT "LIKE": Dynamic Query (REGEX) help
Need Example:
all production nodes at remote datacenter except "extranet" DMZ
that set of nodes will have its own group. They are production but need to be grouped differently.
#bumpsquad, #bump_squad