User Interface Improvements
1. List the contents of tanks next to the inventory slots for the tanks in the Inventory pane (e.g., if a hydrogen tank is 50% full, list that in the pane where you can place portable hydrogen bottles).
2. UI improvement that would be fabulous: Whenever you have a block in selected in your hotbar, a script checks the players inventory and writes up a quick list of the difference between what the block takes and what the player has in inventory. Then when you peek into another inventory which contains some of the missing components, it gives some indicators of which components (and quantities) you need to pick up to be able to complete the build.