The GE90 displays the worst symptoms that I’ve come across, probably because the turn-round time of a LH aircraft puts it in the period where bowing is most noticeable. It doesn’t take that long to even out but the wobble is quite pronounced sometimes.
If it’s actually causing damage, I’d have thought one solution would be to have a small electric motor that slowly rotates the N2/3 section when you think it’s not long before starting (or use the motor that’s already there, like the 787 above).