Just like enbedded lateral off-set on FMS , those are wonderful ideas but full of hidden (good) reasons not to do it.
Lateral offset is SOP these days in the SLOP program, not sure why you wouldn't want to do it.
A good overview here:
https://ivao.aero/training/documenta...P_SEC_SLOP.pdf
Also, you almost always get lateral offsets flying in Chinese airspace, I don't see how you could avoid them. These offsets seem somewhat random and are not always to the right side. Sometimes you even get them on SID's and have to invoke some FMS magic to make them work.