Yup, Sony's Konica-Minolta takeover brought a lot of knowhow into the company. They make more innovative products bringing camera technology forward than the rest of the manufacturers combined. It's still a bit akin to the old "throw spaghetti against the wall and see what sticks" approach sometimes, although I feel they've been getting a bit more focused on continuous high end product lines recently. In terms of haptics and controls, they might not always be perfect, and many of their products to me don't feel quite as bomb-proof as I'd like, but they do take wonderful photos.
As for selling the X100S... let me put it this way. I have pretty much figured out what I want my future camera lineup to look like; two out of three products in that lineup are likely to be Sony's, and my X100 won't have a real place in it. But sell it? No way. Even if other products top it in terms of versatility and perhaps even image quality, the X100 is just too nice to use, and indeed the jpegs are to die for. If I could have only 1 camera, that would still be it. So I'll probably just use it less, perhaps limit myself to social outings, but I couldn't bring myself to sell it unless I was starving.