Yesterday, while in a party of four, we chose to test out Captain's Mode - we made the person who wanted to draft and pick leader of the party.
When the game started though, the 5th member of our team, which was not in our party became the captain.
He didnt write a single line in chat and didnt respond to us and we ended up with heros that we didnt want to play and had an unwinnable lineup (KotL, PA, Tree, Weaver, Puck vs Magnus, Enigma, Gyro, Nyx and Lina).
After this horrible game, we decided to never play Captains Mode again unless we are 5 people.
But I'm still wondering if there is any insight on how the Captain is chosen, and if we did something wrong when queuing up if we wanted one of our players to draft.