I have only added maps on this list that actually work well as a 4 player. These are conversions that I have finished and been playing on for at least a year already.
Berniere-sur-mer is tight, but that is what makes it interesting. One narrow side, with frantic fighting, and one open side, where the players will usually need help from their allies to cover all areas.
All of the campaign maps are frankly huge. As I'm sure that most of you have tried them, you will know that they are simply far too big to be 1v1 maps.
And as for Seine, I have changed it so that the teams now face each other diagonally across the map, rather than 1v1 1v1 1v1. Still, if I have the time, I will convert the vast majorty of these for you guys anyways!
Once the voting is over, I'll make a list on the map pack for which ones will be released!
Still, someone as crazy as I am can't just wait around for a poll before making maps... I've already done about 4 of the maps on this list, in preparation!