The yslamiri thing might be addressed later. Maybe, I'm not sure how reliable my memory is. And there's always a suspension of belief for why characters don't do obvious or smarter things, and usually it doesn't bother me quite that much, if the story is of good quality. FotJ... yeah, no. Moving things off-planet might be a good idea, but FotJ is also obsessed with keeping most of the characters on Coruscant. Probably so they can all waste time together. Remember that Unification Summit that brought the Confederation and Imperial Remnant leaders to Coruscant? I'm not sure the story does. It was probably just an excuse to bring Jag to Coruscant so he and Jaina could have their scenes together, since otherwise Jag should be back in Imperial space.