I dunno... I was really into the movie, so it bothered me. I didn't watch the cartoon for the longest time because I thought it was an offense to the movie. But I finally watched an episode, I think it was the one where they found the pillar that holds up all of Manhattan, and I was hooked... until about season 3 or 4, whenever it was that it started turning into a slimer cartoon.
I assume you've seen Dan Schoening's work on the recent IDW Ghostbusters series, but I think he's really discovered the perfect artistic blend of Real Ghostbusters style with cinematic Ghostbusters sensibilities!
It was okay, it wasn't the best thing ever. That's how things go, sometimes certain elements are missing that make it lose traction, I think that's what happened with the newest G.I. Joe. I think people wanted the old cartoon in some way, and the fact that it turned into an animated "A-Team" was not what they were looking for, but it wasn't bad either.