Following the recent streaming of Pontius we have some clues what will be the base-building and how to do it and what needed.
To place/use the elements we need resources like wood we have to collect. The amount needed seems very low, that’s good.
You can select the difficulty for a wave attack (low normal high) of the mobs on your base.
The elements placed on the grid are destructible but can be repaired or dismantled also using resources.
Here are some screenshots i could make from Pontius his explanation.
The base location
The building raster
Selecting difficulty wave attack