The idea of a conniving military mastermind, manipulating a cadre of paranoid Dark Jedi to further his own
agenda sounds entertaining. Just the back and forth between Thrawn and his Jedi cadre, the empty promises, the manipulated rivalries, the pitting of one against the other, would be a good backstory. Thrawn is the worthy adversary we seek.
If Jedi Outcast
occurs after Vision of the Future
, Thrawn would be long gone. So there's really no way Thrawn could be an enemy if the story were to be consistent with the Zahn novel. Guess we're stuck with Ann and Lyle.
Never give in--never, never, never, never, in nothing great or small, large or petty, never give in except to convictions of honour and good sense. Never yield to force; never yield to the apparently overwhelming might of the enemy.
Winston Churchill, 1941.