Add boats! I think the boats would make it a lot easier to collect materials. Also, if you have a large base, you can get from one side to the other quickly by boat.
small boats, very small boats
I think the boats would like make the game too easy. If anything, add in some sort of rail system that you can ride on if you have a cart.
The objective of the game is be hard to survive, not put items to do the things faster
