^Some stubble might help: I thought Kirk looked younger than ever in the final scene.
I also didn't like the yellow shirt, but Trek often gives captains custom outfits. I think a Voyager-style inverted colours uniform for Kirk (i.e. black with yellow undershirt) would look cool.
And Jeyl: They recorded a Pine "Space, the Final Frontier..." speech when they were deciding who should say it at the end. You can hear Pine's on the into to the gag reel on the DVD and on Youtube. I wasn't convinced by it.