Something to ask regarding Star Trek

I was trying to come up with my own Star Trek: The Original Series story and I have came up with new ideas based on the questions, but I can’t even figure out anything else. Here’s my entire premise.

1. What if the Enterprise, under the command of Captain James T. Kirk, traveled back in time in the 24th century and met one of the future captains of another ship to bear the name Enterprise, not to mention the events in Star Trek: Generations?

2. What are the effective events regarding the disappearance of the Original Enterprise?

3. What would the 24th century look like if the original Enterprise disappeared as a result to those occurring, but alternative, events?

If you have any ideas regarding this entire premise, please feel free to comment your opinions/ideas below. Thanks. Live long and prosper. \//

Your answer to all three answers is this: Kruge would return from the grave and take a great big bite out of Guinan’s hat, setting off a chain reaction of events which would culminate in the destablization of the entire ST Multiverse.