Some other things that never happen on Star Trek…
A redshirt sneaks down a deserted corridor, turns a corner, and suddenly
has a surprise birthday party.
A redshirt manages to avoid the thrown knife, phaser shot, arrow, or
whatever.
McCoy says, On second thought, maybe Im a carpenter and NOT a doctor
after all.
The deflector shields hold through the duration of the battle.
Kirk meets a woman whom hes known for years but never had sex with.
Sulu and Chekov get to do something interesting.
Kirk says, Uhura, Im frightened.
Kirk gets court-martialed for violating the Prime Directive.
A Klingon says to a companion, Hey, I like you.
Harry Mudd manages to turn a healthy profit selling something legal.
An android race turns out to be completely friendly and not threatening
or menacing in any way.
Some patient of McCoys whos NOT a central character lives.
Riker manages to avoid seeming like a William Shatner clone.
The crew of the original Enterprise disperse, Sulu gets his own ship, and
nobody suffers major emotional trauma.
A major character dies and isnt resurrected.
The mysterious giant threatening object is on a direct course for some
world other than Earth.
Somebody says, You know, the Enterprise-D looks really stupid! What is
it, a Close Encounters reject?
Artificial intelligence and android technology make human exploration of
the galaxy obsolete.
McCoy says, Hell live, Jim.
[Ed: My own additions]
Somebody vacations on a planet other than Raisa.
A major character has a serious character flaw.
A VIP visitor to the Enterprise is not a relative, lover or close friend
of a major character.