I'd watched the Dave Filoni The Clone Wars Q&A along with animatics of scenes from season 7 of the unmade season, and one of the audience questions was "What became of Barriss?".
Filoni answered that originally those same micro-droids were supposed to be turned loose once again at the end of whatever episode, blowing up the prison, Barriss and everyone with it just like her method of blowing up part of the Jedi Temple in season 5.
Ain't THAT some sheeit?
But he said he decided not to go with that and hinted she might be used in a Rebels story sometime. YEAH, like Ahsoka VS. Barriss! It looks like she might be one of the two new Sith Inquisitor's. They should have Barriss pursuing Ahsoka as much as Inquisitor was playing cat and mouse with Kanan and Ezra in season 1 of Rebels.