On ABZÛ we ripped out multiplayer and lots of other cruft from AActor and UPrimitiveComponent - dropping builtin overlap events, which are a kind of anti pattern anyway, not only saved RAM but cut a lot of ghost reads/writes.
Oh, nice to see that there are real-life examples of this stuff, thank you very much :)
Needless to say that I'll take a deeper look at the overlaps now :D