As far as a 'resolution' to this season of AHSOKA, I've not seen any spoilers at all, but I am hearing that this show will be Filoni's TESB, which is pretty much what I expected.
If we look at what the 3 main stated 'goals' have been, it's
1. Sabine to find Ezra
2. Ahsoka to find/stop Thrawn
3. For Morgan to help Thrawn return
Number 1 is done, but not like we've thought, and it's opened up an entirely new arc.
Number 2 is in process, & although Ahsoka doesn't know it, she's headed exactly where she needs to be.
Number 3 is going to happen unless there's some MAJOR setback for the villains that we just don't see right now. I think that the fact this is a lot of the audience's first exposure to Thrawn, we are going to see him study Ahsoka & be completely victorious this season.
With two episodes to go, we still have the source of the power calling out to Skoll, the continued decline of the New Republic & Hera's fate, Jacen's developing abilities & more as secondary stories that could be the entire focus of a future season.
I guess bottom line is, I'm expecting resolution to SOME of these things & some good guy victories, but I'm also fully expecting Thrawn to outwit & be ahead of everyone, with the season ending with Thrawn completely victorious. Unless they want to 'Snoke' him like Johnson did, he's pretty much GOT to win now, & I think Filoni loves Thrawn too much to do that to the character.