Here's a little thread for suggestions that you guys could possibly add- after you tackle the bugs of course.
* Huge trader camps (Sort of like communities, which would appear on Island 1)
* Improvised tents
* Multiplayer (Its probably been suggested more times than there are pixels on an entire map)
* Attachments
* 2 story houses/rooftops
* Good 'ole Makarovs
* Crouching/proning (reduce visibility, increase accuracy)
* More building materials (brick, cinder blocks, etc.) and a better building system.
* More awesomeness!!!