I doubt that will happen. As soon as those older buses are cleared out, I bet that people will begin to fan the next set of vehicles, like the early Orion VIIs and the R46's. While I bet that a lot of you do not like the Orion VIIs now, I bet that when it is near the end, you will all be talking about "how they were great vehicles". I am personally doing that in Toronto now, where Orion VII retirements are set to begin in about a year. My point is that once these old vehicles leave, I think that most transit fans will simply move on to the next vehicles (i.e. the ones being delivered to replace those older vehicles and the vehicles that are next in line for retirement).