shit, if hairless monkeys have proved anything, they've proved practically anythign can be free climbed
that said, yeah, a bunch of pins would need to be preset, and fuck knows about taking big falls on some of them, but i bet w/ further cleaning, lichen-scrubbing, top rope rehearsal, etc. it could be done at a max of 5.12? the climbing is very close to ground zero (hard 11 i recall), just much, much harder pro.