If it is true that guests can only use the Lightning Lane once per ride per day, that is a major, major development.
We used to use the "refresh" method to pull multiple fastpasses for some of our favorite rides each day, especially when the crowds weren't that bad. Telling me that I can only skip the line at my favorite rides once per day, even though my family paid $60 extra for
Genie+, is a really big buzzkill. Yes, it will make the standby lines go faster. But even those of us who learn to master the system will have no way to get as much out of a Disney park visit as we used to. With fastpass+, for zero extra cost, a seasoned visitor could get multiple line skips on their favorite rides. Now, for significant extra cost (Genie+ plus IA$), there is no way to do that. This democratizes the Disney experience. But it may well chase off regular visitors.
I was cautiously excited about Genie+ (or at least resigned to it and not that upset about it). Not anymore.