Allow to vote for maps with alphabetic buttons, not only with the digits
Currently you can only use keys 0-9 in the map voting screen. So if the screen has more than 10 items, there are items for which you can only vote with mouse, and using mouse for voting is inconvenient.
Proposal: assign a letter for each map with number greater than 9, so it's 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, ... If the vote screen has less than 16 items you can treat these indexes as hex characters, which is quite cool for a nerdy shooter.