What would be interesting is if you decided to breed a line of collies especially for it and had enough folk willing to test them a bit etc
Ive a young border x welsh collie bitch here, who I will try to find a photo of, but she doesn’t look like a collie, she’s pretty small, prick eared, black as the night with a little white blaze and grey socks. Strong but slinky if that makes sense.
Started her on sheep and straight off the lead as a pup all she wants to do is chase, grab and hold on, she’s slowly learning manners but I think she’s too hard for sheep work. Fearless with cattle