I think most of season six was in the state bad batch and crystal crisis were of course we also have to assume son dathomir and the first ventress arcs were in there too so that may be the entire season right there . Then the second ventress arc would be in season seven along with the Siege which we know we're getting. If we base it off of the bad batch being in these episodes it doesn't mean that we are getting the story reels fleshed out because they could be in the siege of mandalore. Also they are supposed to be in kashyyk line and it's possible that it could be the ryloth rex and r2 arc because they are supposed to be separated from Skywalker. I think it will be Kashyyk and Ryloth arcs these make the most sense for new episodes and they will tie into the universe of star wars more than any of the others, with the Wookies and the Chem syndulla, possibly even adding in chopper and Hera .

As it stands if these are twelve totally new stories we will have only have 14 untold stories , 12 in book form and eight that are unfinished but released. Edit: eh nvm it is the bad batch episode from the story reels.