For those who think the ride should be shut down entirely until it's more reliable--keep in mind that actual experience and effects of large numbers of people, day after day, hour after hour, doing RotR can't be duplicated by testing or theoreticals. I'm hardly an expert in this (I don't work at WDW and am not a theme park specialist!) but it seems to me that anything like this ride, which has multiple elements, has to be "tested" in actual use before all the problems can even come to the fore. If you haven't been on RotR, you don't realize how many various, different elements are involved and I'm not going to go into that here on a no-spoilers thread.
What I'm trying to say is that RotR involves several complex systems that need to be put to actual use day after day in order for WDW to figure out how to keep everything running as smoothly as possible as much of the time as possible while the ride is in actual use.
So, be a little patient. And here's another vote for the current BG system. I think it's working out as well or better than any other system they could've implemented.