Re: How was Liz Sladen's death handled on Sarah Jane Adventures?
Another fan suggestion when it wasn't yet clear what the fate of the series would be was having Jo return and become the group's leader. (There had been plans for Jo and Santiago to appear along with several other heroes from previous SJA stories in "The Battle of Bannerman Road," the unmade series five finale Steve mentioned above.) I think something like that could have worked.
Egg, I dreamed I was old.