I think it would be more interesting if the Hero of the Galaxy, aka Luke's son, went down the path of becoming the next big threat to Galaxy, and that Leia and Han's kid, or maybe not even theirs, what say maybe Lando had a child, or even Wedge or any countless number of characters, maybe even a no name from nowhere, had to be the one to bring that threat to an end.
Though personally, as a big fan of Zahn's novels and te Thrawn Trilogy in particular, I will be sad that I will never get to see those as films. I think they would be fantastic.