^I quibble with "subpar animation." "Par" means the expected average for a particular thing or category, and if the category we're talking about is 1970s television animation from the United States, I'd put Filmation's work above par. True, it had limited motion and a lot of repetition, but the quality of the artwork was superior to contemporary shows from Hanna-Barbera.
Although I would agree that the animation in TAS's first season was somewhat below par for Filmation itself, because the network imposed an insanely tight deadline and they had to rush production. The final six episodes had a more leisurely schedule and the quality is better.