Warbler said:

the only real problem I had with the 2009 movie was the Spock/Uhura relationship. It seems very out of character for a logical and unemotional Vulcan.

Half Vulcan. And having a thing for human females runs in the family.

Uhura was flirting with Spock in "The Man Trap". That scene was cut from syndication prints for decades. If Nurse Chapel is in the next movie, and still has a thing for guys with pointed ears in this timeline, there could be trouble. ;)

Spock seemed kind of emotional, and even smiled in "The Cage". He has never been an unemotional character. He's just pretty good at concealing his emotions most of the time. That internal struggle with his human half is one thing that makes him more interesting.

A plot point that is sometimes overlooked in TMP is Spock's realization after his mind meld with V'Ger. "Logic is not enough." In this new timeline, he may have had that epiphany sooner.