Meh, unless I am spinning agasint FGs (even then, it's still "meh" for me) I just spin and move on. I only care about what I won when either I feel like upgrading or I hit the stoopid 3000 card limit and have to sell. Otherwise, I just keep a max of 12 copies per card and sell the rest when need be.
To be honest, for all those that grind, having more steps in the spinning process just makes grinding more annoying. I think maybe removing the single spin button is somewhat viable since I don't know of, or never heard of, anyone actually using the button often, if at all. The way the "spin all" button works right now is fine as far as I am concerned.