Popularity seems to have extensively grown from connections to the old Ghostbuster movies. In that sense, it is a tiny bit overrated but that does not mean that the series is not excellent. But for children, I guess that this would be more enjoyable? This is surely something worth collecting.
In this series, brilliant characters compensate for mediocre storylines. This has been fixed in Extreme Ghostbusters where both the characters and stories are positively brilliant but it must also be mentioned that while a movie can be made into a cartoon series, doing vice-versa is the perfect recepie for disaster. That should never ever be done.