My change would be:
1. Battle Ends, replay link posted
2. 10 seconds no polls. If > 16 players, offer players chance to join instant action.
3. 45 seconds pick a map. Players cast a vote for 10 different randomly chosen different maps or their own choice. Map is changed to the map with the majority vote.
5. Game starts in 10 seconds.
6. Moment game starts, spectate any afkers.