Am I crazy? Considering selling my RX100 and getting a Panasonic LX7 or Canon G15.

I think the LX7 and RX100 compliment each other well.

The LX7 excels in several ways: 24mm wide angle, excellent MF implementation that is especially useful for macro, a comprehensive set of art filters that can be tweaked and applied both before and after the shot, and IMHO the best user interface of any small camera.

The RX100 has a unique set if filters ("illustration: and "watercolor") that cannot be found on any other manufacturer's camera, and the IQ is in a class by itself among smaller cameras. I recently took the RX100 on vacation with the Olympus OM-D and the IQ of the little Sony was just as good as the Oly with kit lens.