I've nickeled and dimed my way up... had every NEX version and model but acquired quite a bit o' gear. Three points, the first is that there are many who believe, me included, that the RX1 is pretty much a rig that has so much right about it that it easily fits the description of one camera/lens to die for.
The second point, there's a reason for the Sony NEX gear turnover rate for me. The images seem technically sharp ...but rather flat, in other words, foreground and backgrounds seem to be on the same plane and I've used Nikon, Leica and Contax glass as well as Sony. It's just the way Sony renders. The RX1 is closer but still slightly missing that emotional connection of placing you in that time and space of the original experience.
The third is I've had more buyer's remorse over Sony camera products than any other brand. Part because of left feeling cold over the rendering, part and most importantly, devaluation. I look at what I spent on NEX gear and what those pieces are worth now because it's such a large corporation, the market is absolutely flooded with this stuff that's unfortunately all tainted with engineered obsolescence and that is what keeps me from pulling the trigger on anything Sony, but the RX1 may prove this wrong.
One nice thing I will say about Sony, I was able to trade in all my lenses and NEX gear AND a few grand that enabled me to get a nice used Leica M9 w/Summilux 50 which is my one camera and lens. (it'll have to be for a while!)