<p>If they really want to launch a kick-ass mirrorless system they should have the guts to ditch all legacy stuff and use all current technology available to create something great. Maybe even forget about the 102 year old 36x24mm format. <br>
My ideal (Nikon) camera would be:<br>
- square sensor (>36x36mm, so you don't have to turn your camera for portrait or landscape and you can crop in post-processing to whatever you want.<br>
- small, light weight (note that e.g. an Olympus OM10 was only a few millimetres wider than the OM-D E-M10, and it offered full frame images; it will be an engineering challenge, but it is not impossible for fit a large sensor in a small camera)<br>
- optionally the possibility to use older lenses, but for me that wouldn't be a deal breaker if that' not possible<br>
- And the most important: best in class IQ</p>