:shrug:
I think the ears look fine (without modelling new ones, that is; I am probably biased since I put the mod together, though
); I worked with them for a long time just to make the ears work and fit in the proper places on the hairs, but there were just some instances where there would be some odd clipping.
As for the compatibility with Better Heads, it stood to reason that I could not make the hairs fit every single head mesh perfectly without making them too big to be believed would fit on the head. So, I made sure that they worked with most of the heads in my head pack that I was able and left it at that (as they will be made use of in my comprehensive head and hair replacer eventually).
:D