I did a name change in the script that I forgot to change in the programming part, the files have been reuploaded so it should be fixed now!
Nope, still says nick in the protagonist's thoughts and uses Jack for conversations and the character nametag.
Also, I recommend changing the color of the nametag to help differentiate between Isaiah, Jack/Nick, Trevor, and Neo as a whole. Sorry if I'm overstepping my bounds with this or if it was already planned!