I'm less concerned about the sensor than I am about GPS, WiFi, small pop up flash and a tiltable rear screen. THese are the reasons I didn't jump on the $299 offer. Great price, but without these it no more useful than the G1X I already have.
I don't need a viewfinder. Between parallax and small image size, they are just a hassle. But I would love to use it at waist or chest level with a tilting screen. Doesn't have to swivel.
A sensor bump is nice to have and inevitable, but without the other features, I won't.