I’m really not a huge Old Republic fan, but the depth the Old EU went into for such a distant era was really cool.
I don’t think the New EU will ever touch on that era, except maybe a few shallow references. If they did, and tried doing something radical with it, it would piss off Old Republic fans. But if they stayed pretty faithful to the original material, what would the point even be? It’s a Catch-22 that kind of prevents them from touching the era.
They should just bring over the Old Republic stuff and not bother rebooting it. Maybe selectively or with alterations if they want to fit it into the New EU, but largely it would be the same content.