I mean, it's pretty clearly going to revamp the core ancestries (MotM didn't give us new versions of them, so this will), and consolidating all the changes to the core classes along with whatever other tweaks is worth a new PHB to me. Better monsters in a new MM are also worthwhile.What would be the point of buying those books if you already own the 2014 versions? Is the new print intended only for new players going forward? I mean, if you care about the stuff they're supposedly updating, aren't you already playing that way now?
I just don't see why anyone who is playing now would buy these if the changes are as minor as everybody says.