transwarp
The first time they introduced the Eugenics Wars set in the 1990s, Spock called it the last world war. Pike in SNW elaborated that it was part of the escalating conflict that went nuclear as WW3 decades later.
If you read the initial material, Data is drastically different. There is no explicit mention of being unemotional, just that he tends to speak more formally. He’s supposed to be more like the Ilia probe than Spock.
Worf didn’t exist at first, so Geordi the teacher with bionic vision would be the most “other” character. If they’d seen any of the early press material for Phase II, Spock’s replacement there was a very junior officer.
There was a spinoff pitched during TOS called Hopeship featuring M’benga. The pitch for NBC/RCA was that instead of introducing expensive colorful sets, they could stay shipboard and have expensive alien makeup and costumes.