There is a very true point here: there is almost no large scale rock fall at the Pinns. Lots of busted holds to be sure that might send you for a surprise fall (usually onto a 3/8" bolt). But it seems like you're way less likely to get hit by anything on the scale of Yos that would kill you walking along the base. Kind of a paradox.
There's the small block that collapsed in recent years near Son of Dawn. But that's all I can think of. Nothing like say: Middle Cathedral every day during summer, Waterfall Wall, Glacier point (three different massive slides), Half Dome (Regular NW, TisSaAck), Clouds Rest, Rixon's, West Face of El Cap, Tangerine Trip, Parkline Slab, Ahwiyah Point...