I have an original Galaxy, and a pair of 3's and a s5 and all of them look new. I get a glass overlay, and a Seidio case and it never leaves the case, so the point of metal back has no purpose for me other than to get to the battery and sd card.
Time to buy a few S5's as spares. They will get cheap enough you could simply use it to keep a spare battery charged.. lol.. And if the operating phone dies, but can charge, you already have a phone ready to transfer to. ! All without giving Samsung money for new product sales. Money Talks .. BS WALKS.. If we don't buy it, they will have to fix their terrible decision.