This sounds interesting- I really like the idea, and while you've got the engineer taken, I'd happily take the astronaut- the career sort of explorer, though that does overlap with Scout. Probably have a bulkier, yet more exploratory suit- suitable for the EVAs and harshest of climes, also packing a significantly better rebreather system and life support to kinda give it an edge in the farthest reaches. Though I don't know- what would you really like of that sort of character?