Good question. I personally hope it doesn't. I hope the developers add on more than just one map, but not a massive amount. Say you wanted a desert scenario, snow scenario, forest scenario, or an Island scenario. But I'm not sure about letting people make their own maps, leaving hundreds to be played. Doing that would stretch the game out too thin, leaving few players on many servers, but at the same time you don't want few servers with too many players. Great thing to think about XD Only time will tell :)
Lots of maps to choose from or allowing us to make our own will do nothing at all to stretch the player base thin. Having to many servers up all at once is the only way to stretch the player base.. its not like they will make 1 official server for every map we as a community make..