After getting the A7S and been testing for a couple of days, I have to say that I am very impress with it. However there are a few firmware updates which I think can be done to further improve this camera.

-Add custom buttons for the record button please! I want to be able to record using the center button instead of the small original one which is way too small.

-Add custom button to quickly toggle on/off for the APS-C mode. This will be very useful when using a full frame lens and effectively give me 1.5X more reach.

-Ability to view the LCD and EVF in standard profile mode when shooting in s-log or other flat profile. The camera still record the video in s-log. I have some difficulties in finding the focus fast as the image is too flat. The peaking function doesn't work too well for me as when on high mode, it is too overwhelming and when on mid mode, it is too little. C100 has this option so I think it will be great to have that in A7S too. This will greatly help us in manual focusing.

Any more suggestion you guys think can be added to the list?

Why bother making a list, we tried that with the nex-ea50 with no result, Sony doesn't make firmware improvements based on user feedback on this forum, if you are lucky they include improvements on a new model. You just will end up with a long list of wishes that never will be granted.