Re: Why didn't Chekov ever make Captain?
Not everyone makes Captain. It's suppose to be an exception position.
The rank or the position? One can be a Captain and never command a ship. You can command a ship and never hold the rank of Captain.
The boring one, the one with Khan, the one where Spock returns, the one with whales, the dumb one, the last one, the one with Kirk, the one with the Borg, the stupid one, the bad one, the new one, the other one with Khan.