Ian, leaving hope out of it and only being realistic, how long do you think it will be?
Not to be a pessimist but being as realistic as possible, I think 10-15 years might even be optimistic.
At this point I think the best hope, the QUICKEST and most certain hope involves finding ways to actively promote plasticity. The brain capacity is already there, the job of researchers is to find ways to promote rerouting around the damaged areas/train undamaged areas. It'll have to be seen if Optic nerve damage and spinal cord damage necessitate waiting for stem cells.
I haven't heard of any recent trips to the beaches of Southern Spain lately. Evidently the cost of fuel is even taking it's toll on the super-rich.