I used
Genie+ for shows at Hollywood. We went over Christmas, so had MMRR available to us, so we got MMRR and TSM as our rides, did AS2 standby, then did BatB and frozen shows with G+. I didn't plan right for the shows though. We could have done frozen later in the evening so we could get in Disney Jr or Indiana Jones. We were also locked into an early Hollywood and Vine reservation. You have to plan to be available for an hour for each show and the G+ passes are usually available for each show until showtime, so it's hard to get one ahead of time.
If you do plan to get it, I would do a spreadsheet with the showtimes and figure out which showtimes work best for you. I would plan for toy story Land in the morning, give yourself 2-3 hours there (3if you want to eat), if you book TSM with a G+ pass, you can easily get it in the early morning if you're on right at 7am (I would refresh until the time is 10 or 10:30 so you don't have to rush) and you shouldn't need one for AS2. If you have a 10 TSM time, do AS2 first via standby. Then plan the showtimes starting for noon. Maybe dis junior and BatB before an afternoon break, then Indiana Jones and frozen after as well as Muppets after. If you did all those, you'd get 6 passes plus find time to ride MMRR standby, maybe after the frozen show, especially if you do the last frozen show, MMRR will be shortest line at that time.
While genie+ is probably unnecessary for this, I personally liked knowing we were going to get into the shows we wanted without having to guess if standby would be backed up.