RGB just wasn't Ghostbusters for me. It was similar, yes, but failed to capture the feel of the movie.
Egon was way too scientific for a start - loosing his dry wit and making him the bore of the group. Ray was way too “happy” and never ever getting angry like Aykroyd's character. Peter just didn't have the one liners Murray had. Sure, he was funny on occasion but it wasn't the same type of humour - he was too nice too. Winstons was done pretty much OK, though - but I'd have liked to have seen look at the other guys like they were crazy at times like Hudson's character.
The look of the characters is what really ruined it for me, though. Egon with a blond quiff and Peter with his especially. So far the comic's characters have pleased me with their design and they give off that movie vibe. As far as appearance goes this is how RGB should have been - better late than never.