If you were to ask me which incarnation of the Super Friends franchise was the worst, I would say, with some hesitation, the 1984 Legendary Super Powers Show. Let's break it down.
Pluses: Firestorm was added to the team, and Jack Kirby's galactic villain from his 1970's New Gods series, Darkseid, along with son Kalibak and chief assistant DeSaad, became the central villain.
Minuses: Despite being featured in the show open, which we'll show in a bit, Aquaman hardly appeared at all. The Wonder Twins were written off the show after 3 appearances. Despite his well-earned rep as a class-A villain, Darkseid was saddled with a questionable gimmick. He had a crush on Wonder Woman. Only 8 new shows were produced, when 13 should've been the order. We won't even discuss the new-look Brainiac, which was introduced in the comics a year earlier, but looked like something out of a cheesy B-movie.
Casting changes: After being the voice of Wonder Woman since the launch of the series in 1973, Shannon Farnon was replaced by newcomer Constance Cawlfield. Coupled with Wonder Woman being courted, if you can call it that, by Darkseid, it was not a good time for the Amazing Amazon. Adam West reprised as Batman, with Olan Soule, who had been voicing the character since 1968, moving over to be the voice of Professor Martin Stein, 1/2 of Firestorm.
Hewey1972 uploaded the open, with the intro spoken by the late Dick Tufeld.
Things would get better the next year, which would be the series' final incarnation. For Darkseid, it could've been worse. They could've done a satire of Love Connection or The Dating Game.