Assuming Fabbro regains some form but doesn't explode offensively next season, what would the ask from Nashville be?
I don't think he needs to regain "form"... just needs a coach that will play him in the top-4 where he belongs. He will never "explode offensively" either IMO. Preds already have Barrie and Carrier on RD, and there's no question they are more offensively-inclined than he is, so he'll always be the guy hanging back and being responsible.
But if for some godforsaken reason the Preds don't fire Hynes this summer, there's not too much point in keeping him. Just find the best offer, hopefully a 1st, if not then a suitable change of scenery swap, if not then a 2nd+Prospect. I cannot see going any lower than that.