I don’t see Favreau or Filoni really being at odds though. So long as Filoni has a good idea for why Ahsoka (and/or Sabine) might show up in that time period on the outer rim, I don’t know why Favreau would shoot it down or veto it on general principle. It would have to be a bad idea or a bad pitch first. A big part of why Favreau is even part of this whole thing is due to Filoni hiring him to be a voice in Clone Wars.

Mandalorian’s already got a second season, will likely get a third. I think chances are more than good that Hondo, Ahsoka, Sabine, and Bo-Katan might all appear before the run is over. Maybe even Hera. I also think if that happens, they’ll put Tiya Sircar, Ashley Eckstein, Katee Sackhoff, and Vanessa Marshall in their corresponding roles.