First of all - you really need to point player to that loot button, because I spent few minutes trying to figure out how can I start playing.
But once I found out and started all that salvaging, building, selling and istalling, I had a surprisingly good time. That feeling when you salvage expensive component is addicting.
Once you discover all features, the UI is kind of functional. Visually - I think there is a space for improvement to get some visual identity (but this can be subjective).
I would also welcome some sound effects.
I think it is a good game you have here.