Map voting.

[Sir Baron]

My fear is that the same maps will be played over and over again.

Exactly why I oppose this idea. Every hard or ragnarok run is going to turn into an event, same map again and again. It would be really boring. In addition some unpopular maps like Caravan Ambush(one of my favourites) will never have chance with that system.

Or how about make all maps playable instead of always destroying the good maps and make bad maps good. 
Nobody likes to play Caravan Ambush because it just takes ages, I can't remember to ever saw a rag run having sucess on this map, the people just change the map or change the server or stop playing so the map vote would change nothing.

I saw a CC event do a Rag run in 35 minutes on that map

People don't play maps that they don't know
So people pick a few maps and spam them only