Will skin grafting (transplants) ever become an anti-wrinkle treatment?

No. No. Skin grafting is a surgical procedure that helps close wounds or repair scar. It rarely looks like or behaves like the skin it is used to replace.
Not any time soon. The skin is different colors on different parts of the body, so it is difficult to get an exact match. There is a scar around the periphery of a skin graft, which is usually noticeable. On the other hand, I use dermal grafts, the deep part of the skin, as a filler for deep nasolabial folds and to restore lip volume. Most frequently this is done with a facelift or other surgery when skin is removed.