I guess I'll drop in my own opinion. I do like the new linearts better, and for the most part I would agree with the changes, but one of my first hoards, and one that I worked years on, is a horse hoard from early 2010, and I'm afraid that if the linearts got edited, I'd not longer like the hoard and more than likely the design would be changed to look 'better'.
I also have a problem with the draft lines, I didn't really like them when I first saw them, but apparently most people do like them. I don't know exactly what it is I don't like about them, but I prefer the simpler design. The details just seem to take away from it, and I feel the face looks of. I do agree that overall it looks better, but they just bother me too much.
So I'm just sitting here in the middle not really liking the old linearts, but not wanting them to change to the new ones. >.<