Many thought Jetman was the first Super Sentai series that Haim Saban wanted to adapt, this 1986 LA Times article confirms that Saban planned to adapt Bioman. There were rumors for the last couple of years that Saban wanted to adapt Bioman. The article says: "Bio-Man and his squad were in danger. This time, however, their fate wasn't resting in the hands of Zadar, the evil half-human, half-robot thug who wants to conquer the world..." Also: "He has lofty ideals, and I wish him luck in reaching them. But there is a substantial difference in being a producer of music and being a producer of entire television programs," said Karyn Ulman, vice president of music for Taft Entertainment." In 1986 I was four, I was eleven when Mighty Morphin Power Rangers first aired, wonder what the world would be like if Power Rangers had already had its 20th anniversary in 2006? And 25th would be 2011 I suppose. I remember them saying for MMPR that Fox Kids wasn't sure about the violence, that is probably what hindered the series in 1986.
Related: 1986 LA Times article