Good topic 
Iād build more if structures had some purpose and requirements. Basically what I described in this topic: Distribution structures
Short version: network of structures that would be used to distribute various services between players. E.g. a player having crafting skills maxed out could offer crafting from his station but depending on broadcast tower he makes it only covers certain area. Broadcast towers can only cover certain area but you can use extenders which you build away to promote your service in another area etc.