Have a look in here also if you’re interested in discussing this topic :
I think one of the most interesting ideas proposed there, is to have an interactive map bans phase. (think of it like the pick and ban phase of a League of Legends game)
When 2 players are matched together, they are presented with the 9 maps and they each ban one map in turn until they run out of bans (4 bans each).
When someone is ok with the maps left, he can skip the bans he has left. This way you end up with more than one map and the systems randomly picks between those (as it is already the case currently).
If both players use their 4 bans, you end up with only the map that they both agreed to play on.
Of course, another possible change would be to keep the current system but simply increase the number of bans or give unlimited bans.