SilverWook said:

Inspired by my favorite DC Comics TOS story about the end of the five year mission, I thought it would be really neat to have Decker board the ship at the very end of the montage. (In the comic, he was a Starfleet liaison officer, and already sporting the TMP uniform.)

I remember that issue. It has Uhura all happy about the new uniforms. Wasn't that the issue written by Walter Koenig? I have all the Marvel '79-'81 comic series, and also the complete first series of D.C. comics from the mid-late 1980's in a box someplace. I always hated that they never had a Wrath of Khan tie-in comic to bridge the two comic series together.