The "dev" in question here is Sam from OSMC (so he's no stranger to his own patches). Sam would like 3D to work on RPi hardware again, but that development is something for RPi devs to handle. It's already a task in their to-do list. The challenge is that it's a very low priority in the list, the list is a long one, and there's a continuous drip-feed of higher priority items being added to it.
Thanks chewitt , will wait and keep an eye, for now will source a cheap RPI3 for the meantime. Thanks once again.