@SuperSharp:
"-Add a launch cost becuase it's super "OP" to reuse rockets."
Well, there is a not-insignificant refueling cost, and the reusable rockets cost a lot more to build. Although it says 90% success chance, I seem to lose a rocket at least every five launches, so I figure 20% of the construction cost goes up in smoke with every launch. The refueling cost is in addition to that. There's clearly balancing to be done, but this is a alpha after all. :)
One thing I've noticed is that Build Quality never goes up with reusable rockets. I'm guessing that's work in progress.