That is actually very likely to happen, although I don't know who the voice actor will be. Filoni listens to fans, and he undoubtedly knows how popular Baylan Skoll was in Ahsoka.

I am not sure who they would have picked

I mean if Ray was alive I would have assumed they bring him back as a young Baylan Skold

So at this point I am not sure who would be a good fit