This really should have been a PM but I am a new user and I can't do those yet!
@yw4z, the Transmission team seems to like your macOS Big Sur icon but has found no way to get a hold of you! Personally I think the shadows on the metal base could have slightly less contrast and the specular highlights also on the base could be reworked a bit but I've been using the icon for a month or so now and it looks real nice!
Apologies in advance for spamming the forum, if I had a better way of sending this I wouldn't be posting here! 