I've played out to Kepler and back, and I'm done. Good potential, but it's a little to active (once you get the hang of it) for an idle game, but not active enough to keep you from lots of short waits - almost like it can't make up it's mind between idle and strategy. Like I said, though, there's some solid potential here.
Some return-trip things are still "earth-centric". The button should probably say "Return to Kepler..." (along with the upgrade message), the eject cinematic should have an alien commander, crew silhouettes (hire button, available crew counter) should be alien. Minor stuff, but it would be a nice touch.
 "Destination Kepler")
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 "Don't Hit Me!")