Regarding #2 - just look at the new "Tom Swift" show. I watched about 1/2 hour of the first episode and wanted to puke.
#3 - What scenes from FP did they lift? I like that movie a lot too (esp. a young Anne Francis !!).
As a kid, I read books about the adventures and inventions of Tom Swift, Jr., . . . a crew cut kid with blond hair, blue eyes, and a girlfriend. In the TV show TS became a gay black guy. Phooey - I refused to even tune in to this Woke Gay Network offering.
As far as scenes in B5 lifted from FP, they involve the Great Machine on Epsilon 3, which look very much like they were inspired by the Krell machine in FP. They added more glitz for B5 since it was made several decades after FP, but the basic layout is there - people walking across a bridge over a technology-filled shaft inside the machine.
B5 machine picture - interior view at about 4:52 (VERY poor quality image!)
https://www.youtube.com/watch?v=EnRUFyRos5gFP machine picture - interior view begins about 0:41
https://www.youtube.com/watch?v=HHXfMjp2zqI