As a child, this reviewer did consider 'The New Scooby Doo Movies' as one of the better Scooby Doo shows. Still do think that, but also like it less than as a child because the problems are more noticeable, notably the guest stars and villains faring better than others.
The first episode of 'The New Scooby Doo Movies', "The Ghastly Ghost Town", was decent but it wasn't great and one of the first season's weaker episodes. "The Dynamic Scooby Doo Affair" is a vast improvement, it is agreed that the supporting characters are put to much better use. Batman and Robin are very welcome support and their chemistry with the gang is enormously enjoyable.
Joker and The Penguin are excellent villains and far more memorable than the ones in "The Ghastly Ghost Town". The Hooded Man provides some creepiness, if slightly let down by the very obvious from the get go true identity of the perpetrator, my only real complaint of the episode actually.
Plotting and pacing are also much tighter, remaining strong narratively throughout the length. While it is a step down from 'Scooby Doo Where are You', the animation is better than in "The Ghastly Ghost Town", more inventive like with the rotating house (one of the highlights of the episode) and less crude.
The music is haunting and energetic, with a very catchy theme song if not as iconic as 'Scooby Doo Where are You's'. The writing is funny and endearingly silly, while the story combines humour, peril and atmosphere brilliantly. The gang are great, with Shaggy and Scooby's friendship still shining, and the voice acting is strong across the board.
Overall, a great episode, the first great one of the show. 9/10 Bethany Cox