More Utility for the Engineer Vessels
Right now, there's not really a reason to use the Beaver or Raccoon in the normal open universe. As I understand it, the point of them was to be able to build a base quickly at lower levels, but aside from that need falling off once you're established, there's not really a good reason to build a base until you do have a good ship and enough money and materials to really defend it.
What I think would add more utility and therefor purpose is if these vessels had a built-in module that allowed them to access the base inventory remotely to allow them to build without having to carry the building materials on them.
I like the roleplay and immersion aspect of these specialized vessels, and I'd love for the dev team to really lean into that, personally.