Sorry to be so late to reply, I was on vacation last week.
Seriously? TMP is very much a character-development-driven movie, more than any other Trek movie except maybe TWOK. Kirk and Spock are troubled, unhappy characters because they have disconnected part of themselves. Spock accepts his human side and his friendship with Kirk. Kirk decides he can't be an administrator in the Starfleet bureaucracy and belongs "out there." V'Ger is an analogy for their characters' dilemmas. The scene between Spock and Kirk in sickbay after the spacewalk is the key scene in the movie, and in many ways the key scene for the rest of the TOS-cast movies. Spock never acts like the prickly, conflicted outsider after that.
--Justin
I wish there was more time for character development, but there wasn't time. After all, was there any in ST:TMP? Maybe a touch on Spock, but that was it. ST:XI had more character development.
Seriously? TMP is very much a character-development-driven movie, more than any other Trek movie except maybe TWOK. Kirk and Spock are troubled, unhappy characters because they have disconnected part of themselves. Spock accepts his human side and his friendship with Kirk. Kirk decides he can't be an administrator in the Starfleet bureaucracy and belongs "out there." V'Ger is an analogy for their characters' dilemmas. The scene between Spock and Kirk in sickbay after the spacewalk is the key scene in the movie, and in many ways the key scene for the rest of the TOS-cast movies. Spock never acts like the prickly, conflicted outsider after that.
--Justin