The fukked up thing is you still go to the clocktower, they make it a big point to show and reference it, you just stand outside it lol,
they could of quite easily had it go like this..
Carlos mentions that his mission has changed once the train gets started and that he has to go to The RPD, this happens anyway, but then he mentions once his mission is complete he has an extraction ready at the clocktower once it’s activated to signal pickup (same as the original) once the train crash happens Jill contacts Carlos to tell him and he tells her to head to the extraction point instead and wait for him.
Now you have a reason to play a big missing part of the original, Just have Jill assume nemesis died in the train crash until he pops up with his RPG to shoot the chopper down