I was honestly kind of hoping they would just strand everyone in that new Galaxy, find allies, and Thrawn would just decide to build his new Empire there, with the plan to some day bring it home. Start a parallel continuity on a completely new slate.

Then jump forward a few years every season until you've caught up in real time with where the sequels left off, and an elderly lich-like Thrawn, kept alive by the sorcery of the Night Mothers, can see his embattled-but-finally victorious and rebuilt fleet launch their long-awaited invasion of his home Galaxy. Then they could do something like the Yuuzhan Vong storyline with the sequel cast and without the stupid Yuuzhan Vong.