Actually I wasn't referring to the Thrawn triliogy,...just that if Lucas did happen to decide to made 7-9 and he kept up with the roughly two decades between trilogies,...then the original actors/actresses would be about the correct age.
As far as Hamil's accident, not sure about it being before or after Jedi (my understanding is it was indeed after and that actually was why he was only doing voices) but you know, all Lucas would have to do is write into the script that Luke gets a bit f**ked up at some point. Yea it would be against every novel,...but then again look at where Palpy got the DS plans in Ep1 vs the novel's story about it.