Recent months we have seen the same maps in the map pool over and over again. There arent much surprises anymore.
I would love to some new maps in the next months again. I really like the idea of putting maps from ongoing tournaments into the map pool. And other idea is to have a monthly map contest. We as players can vote on those custom maps and the winner will become part of the map pool.
For the voting on the map pool itself i would suggest putting this into the game and make it hidden. This way everyone is able to vote (not only those with an account here) and you cant really vote strategically.