Quick story: My family went to DAK last night and got evac'd off NRJ. During that time, she started talking to some lady who had done Slinky during the limited soft opening the night before. She had nothing but glowing things to say and my Mom says she has heard more of the same from others. Apparently the exact quote the woman used was "Best ride in Disney World".
Point is, Slinky is getting overwhelmingly positive reviews and the only thing that will hold it back will be the wait times. I agree with you though about Saucers. I think once the dust settles next year and everything opens, Saucers will be under an hour on average. Still too much, but hey, better than 3 hours!