I'm indifferent about it at this point. I arrive 10/25 for 12 days. If it's going to drop, I definitely want it to drop before I arrive. Would really like to know if G+ is truly one reservation at a time or not. As I've stated before, that's make it or break it for me. In other words, I'd welcome it for my trip if stacking where allowed. Definitely wouldn't want it if that isn't how G+ will work.
You definitely won’t be able to stack. The announcement from Disney says Genie+ allows you to “make one selection at a time, throughout the day.”