9. The Mandalorian/Din Djarin
With the potential of Bo-Katan appearing in Ahsoka’s series, it is very possible that the protagonist of The Mandalorian himself, Din Djarin, could also make an appearance, either as a cameo or possibly in a larger role.
Now that he has safely delivered The Child to a Jedi for training, his journey is over and his place in the galaxy going forward remains unknown. As such, it is possible he decided to join up with Bo-Katan, and as the new owner of the Dark Saber, help her retake Mandalore.
If Bo-Katan does appear in the Ahsoka’s series, then having Mando appear alongside her makes a ton of sense.
Ahsoka is already familiar with him, having worked together to liberate the town on Tython and helping to connect with Grogu/The Child to learn more information about him. Seeing how Mando likes to re-visit old acquaintances for help, we wouldn’t put it past him to come to visit Ahsoka for assistance. (And we wouldn’t put it past Ahsoka to seek out an experienced Mandalorian for assistance either.)
Not only that, as the Mandalorian is Disney+’s flagship show, having the titular character appear in its connected spinoff is a logical thing to do to attract more viewers to it, making an appearance from Mando a high chance of occurring.