But I think you can have that same sort of cross-generational connection without having to literally adhere to the continuity of days gone by. It was my dad who introduced me to Tarzan, Godzilla, and the old Universal monster movies, but we enjoyed any number of the various remakes and reboots together, including, say, the various Hammer Film reboots of the classic monsters.
In other words, my Dad grew up on Bela Lugosi, but that didn't stop him from enjoying Christopher Lee or Frank Langella with me. And, if I can get personal for a moment, he was thrilled whenever I wrote Superman or The Green Hornet or Godzilla or whomever, even if they weren't necessarily in the same continuity as the movies or radio shows of his generation.
You can get the same experience without clinging religiously to the "canon" of previous eras.
The closest any of those get to having the sheer mass of relatively in continuity stuff to trek is superman. And only for the first x years of continuity. All the others are different media adaptations and already reboots when you came to them.
Trek was 30 plus years across a thousand hours. Again. Trek is unique.