This would need to come after 'mark group as inactive' being implemented, however...
I have a group that we started 20 years ago with some friends. I'm the only one who's still around, the other members have not logged in since then, however I'm stuck in the Everyone role. I'd like to take over and continue the work we were doing under the same brand name without having to start my own (losing the historical founder, lineage).
In cases where no one cares, in all intents and purposes it would not affect anything, and it would only do good, maybe allow a (reversable, observed) trial takeover period for enthusiastic people who once enjoyed the spirit of an old group and want to breathe some new life into it. This is the first wave of inter-generational hands-changing, but If SL continues on well into the future this issue may start to come up more and more.
Wow Guilds have this & have had it for a long time.