6,000 is ridiculous, not sure that this will be a popular camera. For just 500$ more you can get the A1, or for $2000 less you can get the Z8 which is likely a better wildlife camera anyways.
Not a lot of people want 120 fps anyway, that's too many files to go through. I'm honestly not sure how much better cameras get from here: We have enough pixels, enough FPS, incredible AF, great color in all of the top bodies. Price will likely be the main factor in camera choice for me. Another massive development might ruin action/BIF photography in general because it's just too easy.