Remove ability to vote for sectors that already was cleared (the ones that don't have colored solid border and can be captured without being selected by vote), at least turn the 'ability' off by default in preset and official servers' missions. The issues with this is:
1. most players do not understand that they can capture the sectors without them being "contested", that leads to that teams (most often BLUFOR, for which it goes even worse because of missing helipads) stucks with enemy team's sector selected and half or more own territory sectors not cleared/captured.
2. (removed)
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