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.
In principle it's a fine idea, but their implementation has so many footguns (race conditions, thundering herds, perf cliffs, etc) it was easier to impl your own simpler alternative.