I tried something similar when the neck seam problem got really bad, but the problem I've always run into adjusting the neck length is that the jawline starts to clip horribly, which looks really unnatural and also has a knock-on effect to poses and animations, too. Until I figured out Material Editor, I was mostly getting around it in my Studio time with chokers, hair physics and lighting to hide the seam as much as I could.
As for favourite cards, I think the first card in my last dump, Mharie, has been updated and posted here more times than any other of mine, I think, though I am partial to a redhead
I try to avoid using fusion too much once I really get a girl right and Jewel, the girl you pointed out, is certainly one I'm
really proud of. Using fusion, even on your own stuff, tends to make every card you make look pretty samey, and I try to keep my creations as varied as possible. If not only for myself, but for the peeps out there who like and download my stuff
Variety is spice of life and all that