Describe the feature

I have raid frames disabled and use Blizzard UI for those, ordered by Role, meaning I cannot rely on the depicted groups there, I have to manually check in the Raid window to see in which group I am. I believe the default indicators also include this (?)

Describe the implementation

Custom Text already supports a bunch of replacements, if it could be extended to also include e.g. partynumber or raidgroupnr or something, that'd be handy. Also would default to an empty string or just not get loaded when not in a raid, and would have to update on GROUP_ROSTER_UPDATE or whatever the event is.