The whole idea of Ilia with her pheromones and her ability to ensnare men with her sexuality in a teenage boy's dream. You can't probably get more sexist than this particular fantasy of GR's
IMO its only Kambatta's sweet-portrayal of llia that counteracts Ilia's sex goddess role.
IMHO, Deltans represent the swinging 60s free-love mindset.
Unlikely, considering TMP was made in 1978.