It has been my thought for many years that this ongoing and increasing stratification is going to really damage coins overall. If the collector base is damaged, much as in the analogy to pyramids, there may be a crumble to eventually occur. How much notoriety can you have if there is no audience to appreciate. Not that it is my motivation, but I think that may be the reason for some collectors going for the marquee coins - they are coveted by the many, which may not be so many soon. I don't know about other readers, but I find very little to buy these days if I stick to my original focus as the choice bits have gone ballistic.