I can't remember if anyone mentioned this, but two things from "Encounter at Farpoint..."
Deanna didn't just sense strong emotions, she felt them, to the point of blubbering like a baby when she sensed sadness and falling to the floor when feeling pain. That definitely would have gotten old fast.
There was also a hint that Troi had taught Riker to hear Troi's thoughts, something that was never explored again.
EDIT: Another one from "Farpoint," the not-yet-agreed upon date. Data says he graduated the Academy in "'78."
Long thread...
didn't read them all.
In 'Encounter.....' the crew stops and comes to attention when Picard walks by.
Check out the opening sequence in engineering.
Quite a contrast with "All Good Things," where a crewmember actually bumps into Picard in the corridor as Picard timejumps, yet doesn't appear to care. He just continues on down the corridor like nothing happened despite nearly knocking the captain over.
The idea was supposed to be that Kirk, legendary as he was, was just "another captain" from their 80-years distant past. Basically, if you weren't a fan of his and read about his adventures you may not be all that familiar with him or his missions.
Kirk is only, really, "legendary" to us.
Even if the general public isn't really aware of Kirk, you'd think that a career starship captain of the Enterprise D would at least have some basic familiarity with the history of the Enterprise line. Hell, Kirk's ship model is sitting there in Picard's observation lounge.
I can understand the desire of TNG's writers to resist that tendency by downplaying Kirk's fame.
I think it reflected more of Roddenberry's feelings, who originally wanted no references to TOS of any kind ever, to the point of never showing any familiar races such as Klingons or Vulcans.