I think the traditional Monsters are going to be around for a long, long time - but more as very recognizable Halloween/cultural icons rather than full fledged 'movie stars' or 'TV stars'. 

Again, I think the Gillman has the best chance for a revamp/reboot/remake as he hasn't been as endlessly mined in movies/spoofs/cartoons/tv series/commercials/Halloween decorations as the other figures.