Thrawn Mythic Tier III difficulty increased???

Definitely did not buff it. It was always top end stuff, moreso than the other mythics, IMO.

The first time I finally beat it after an absurd number of tries, and don't know if I bothered on the refresh after a few attempts.

This time, with some improvements on my team, but probably relatively little, I was able to beat it both days after half a dozen retries each at most.