Are you going to make some previously done maps for multiplayer? Maps, where we could find buildings and places we weren't able to build or see (like bridges or fords [available only in singleplayer mode])in normally generated maps. You could use your imagination and create some special maps which could make us more entertained and bring us a new experience. I've got the examples: 1) Islands connected by narrow lands or bridges. 2) Peninsulas connected to one land which constitutes a huge battlefield. (Players situated on the peninsulas) 3) Huge islands with place for more than one player.