[Drake]

Why would it be self repairing? If you did that, it wouldn't be any different than adding more engines or a solar sail. You wouldn't have any drawbacks to using it.

Repairing is too easy as things stand, I don't think we need to exacerbate the problem. I'd rather it work so that you could only use one of a certain type of component per turn, and repairs either cost resources, or took longer (or both).

Just my 2 cents.