Having a global group but non global members seems useful to me for event purposes. The original reason I found out about thus is because I have an external event sheet that contains at least 30 events all targetting this group.
I have one scene with 2 text objects that apply, another with 20, and another with about 5. Having this work saves me a ton of event rework, or having to remake a group for each scene. Requiring the objects to be global would mean I would have to hav 27 extra global objects show up on tons of scenes that don’t need them, in a objectlist that already is a bit of a mess to navigate.