A few samples.
In Japan quite a lot of shots were big crops, often as much as 6000px down to 2500px due to subject distance. Luckily the A99 and 70-400G gave great sharpness and detail PROVIDED I managed to keep the camera steady. Adjusting in LR to medium contrast and making sure I used the full white to black range helped. The first shot was quite hazy, could have done with "dehaze" a few months ago!
approx. 4200px wide 1/1250, f7.1, ISO250, 330mm
approx. 2700px wide 1/500, f7.1, ISO200, 400mm
approx. 2800px wide (A77 plus 70-400G) 1/400s, f9, ISO100, 400mm (600mm) and still a big crop. Needed 1/400 to reduce shake, I'd normally use 1/125-1/200 to give more rotor blur at shorter focal lengths. many adjacent frames were scrapped due to blur. Probably got 1 out of 10 pin sharp.
At times I wonder if the new Sigma or Tamron 150-600 would be any use but I'm sure I'd suffer from increased shake at 600mm on both A99 and A77.
Hope these are of interest.
If the above kit is sold, only an A77II and Tamron 16-300 left sadly. Sony cannot supply what I want so rightly or wrongly I've branched out to someone who does and I'm very happy.