-A Klingon/Federation war prior to "Errand of Mercy"
Which had already been established in
Star Trek VI: The Undiscovered Country.
-Klingons having cloaking devices
The idea that they didn't is itself a piece of fan continuity, it's not on screen anywhere.
-Starships being a dime a dozen when in TOS the Enterprise was special and there were only 12 like her
We did just have a giant
war that blew most of them up. That would make any ships left pretty damn special.
-The Enterprise being the largest and most advanced ship built by man.
Wait, which is it, it's the largest and most advanced ship, or there are twelve like her?
-The entire look of the Klingons and their technology.
Looks like a logical extrapolation from their
Enterprise levels of technology, not sure what you're referring to here.
-Klingons being bald because their ridges are sensor palates.
What does this have to do with anything?
-Instant travel anywhere and anywhen in the multiverse, making Voyager and Deep Space Nine's premise a joke (admittedly, this one will likely get fixed)
Then why are you bringing it up?
-The Klingon Augment virus never happened
"I saw it happen, don't tell me it didn't happen." No seriously, what are you talking about? Does the fact that there are ridged Klingons in
The Motion Picture also mean that there was no Augment virus?
-Site-to-site beaming and intraship beaming being common
The original series has some very casual use of site-to-site beaming; the idea that we don't do it doesn't show up until
The Next Generation, must be some problem with the technology a hundred years from "now".
-Paris is an overbuilt megalopolis
Oh noooooooo. Everything is broken, there's no possible reason a city's architecture might change over the course of a century.
"How did the Enterprise look while Pike was in charge?"
It looked like a saucer with an engineering section, shaped like a cigar, and twin warp nacelles that stretch out on pylons from the engineering section.