I feel that Spidey compared to xmen, Batman and teen titans doesn't have a extreme heavy fan following because Peter is the only young hero in his world that is taking solo heroics on his own. Spidey also lacks major young villians that are in spidey's age range or younger, Spider-Man also has most of his protégés aka spider kids like anya off his main title or with other Marvel teams.
So should Spidey get more younger cast members? The adults in the spiderman world have been past there prime and the new cast currently is just as predictable. Peter hasn't been a freshwater youthful spirit for a while and most of the cast members have went their seperate ways.