possibly.
Porky does know Daffy more than most toons. the issue I have is that in a typical story of this character change, i.e. the hero's journy, the heroes have to be REMOVED from society, and I feel like they aren't very removed from society if they are always hanging out with people from the same cartoons. not only that, but I think that if we put them in Toontown, then we will potentially create a plot hole. (if Roadrunner and everyone else is in Toontown, then why can't they all go searching for Daffy? it can't be THAT hard to find him, even if he is a city, particularly with a bird who can travel the speed of sound.) also, if we put them in toontown, there would be no reason to meet our beloved fandom underground, or be introduced to our villain.