I see your point, but isn't the RX1 quite a bit smaller, plus once you factor in the 35 f2 lens, the price doesn't seem so far away. Except for the lack of viewfinder and perceived lack of value, how did you get on with it?
I have an A7 and 35mm f2.8 and although it's by no means a shirt pocket camera it does fit in a small bag. The RX1 may well be smaller but I wonder if it too would end up in a small bag and if so maybe the additional bulk of an A7 wouldn't be too much of a disadvantage and of course has the advantages of a VF and the option of changing lenses.
RX1 is my favourite camera/lens of all time. I do a lot of climbing and scrambling in the mountains and it's small size and robust construction means it is taken everywhere and has survived a lot of abuse. Shame it doesn't have a built in viewfinder but the removable EVF does work well and means it is small when removed. Used it with EVF for landscapes etc. AF isn't fast but perfectly adequate for most of my uses. As said, it's probably nearer to 30mm than 35mm. Battery life very short lived but the batteries are small and easily carried. Fantastic lens/sensor combination and files are extremely malleable in post processing. Now if they only made RXs with a 21mm lens and a short telephoto...