Anyway, I happen to enjoy NJO. I personally hope that Disney doesn't overwrite it.
There's no need to, and in fact it would be quite odd if they did. The timeline of the novels has progressed 44 years after the Battle of Yavin. The actors have aged about 35 years since that time. So, that's nearly perfect for the amount you would want them to age on screen, given that Star Wars humans especially Jedi have slightly longer lifespans.