Re: Uhura replacing McCoy/Bones?
Of course it makes sense that Uhura is more central to the new movies - Saldana is deservedly a hot property these days and it makes the whole thing less of a sausagefest. It introduces something new to the dynamic - "Bones" is a pretty static character; he changed least among the three central characters over the decades.
I had steak and a loaded baked potato for dinner on Sunday.
As a steak I enjoyed it a lot, but as macaroni and cheese I thought it was disappointing.