Maybe I haven't read enough of Legacy to be sure, but it seems to me that the Vong and the post-NJO fallout was not used enough to warrant its close proximity to that timeframe. Still seems like an ass-pull though. They could have kept going with Wyyrlok, no? Yeah. Don't get me wrong, I'm not saying Palpatine should have been so awesome that at 15 years old or whatever he had all the strategy, subtlety, and refinement to conquer a galaxy. Plagueis should have taught him some tricks outside the Force, but the titular character was too skilled in the art of politics for my liking.