It may not be based off of exile constructions, however this definitely makes bases look more aesthetically appealing. This mod can be found on the Steam Workshop and adds all A3 Structures to the mix of build able objects including a Shed Safe that can store much more than the average.
DonkeyPunch is a mod build to be along side of Exile, and if you wish to use it on your own server, apply to the forums to get you set up. Or even join the community of servers already running this!! Up to you, happy convictions.