The OVF of the X10 needs more feedback, for sure! Fuji should have had the X20 OVF in the original X10. They are great little cameras and the sensors are phenomenal given their size. I've not had the opportunity to use an X30 for any length of time, but Fuji is good about having worthy updates.
I appreciate Robin's blog. Why? He works for Olympus Malaysia and has no problems telling you when a lens or camera falls down, or places where Olympus could be doing better. Based on the type of photography he does and his "shutter therapy" sessions, a more deliberate, calculated approach to street - the X100 definitely would fit the way he works.
There is a bit of diminishing returns for me in the size of a camera body. The smallest cameras I can use comfortably are the Oly EM5 Mk II and the Fuji X-T10. Anything smaller is too fiddly for me and they have to start taking button features off the body or place them in spots that are too easy to hit accidentally. I've tried using a Pentax Q7 and just could not hold it and feel right with it. I think Panasonic might have realized that with the GX7, and wanted to have something with a bit more of a substantial grip, something that would balance better with larger lenses. Remember, they are bringing out a 100-400mm IS lens, which is probably going to be pretty sizeable and you'll want a camera that fits will in the hand to use with it. The GH4/G7 are already there. It makes sense to me that they are making the next rangefinder styled body they put out to a similar standard.
The X-A1 also has a Bayer sensor.
I liked the IQ of the X100, just could not live with the performance of it otherwise. I'm happier with the X100T performance. I usually shoot it in JPG mode, so I just tone down the capture as I process everything to my taste in post afterward.
2x2fest promotion by Andrew Livelsberger, on Flickr Calzones on High Street by Andrew Livelsberger, on Flickr Reading At The Window by Andrew Livelsberger, on Flickr Ready to roll by Andrew Livelsberger, on Flickr
Read this: http://bestlightphoto.blogspot.com/2015/05/primes-vs-zooms-and-why-i-use-both.html Depending on what you shoot, you may just want to keep that zoom lens and add on primes at a later time to supplement how you shoot.
Are you talking about keeping the EXIF data with the file or actually having the shutter speed, aperture, ISO information display on top of the image or in a border around the image. The answers to those 2 questions are really different and I'm not clear on what it is you are wanting.