Why would you touch something like that? Its obviously loose and should be avoided. El Cap (and climbing in general)will never be safe. If you fix any potential problem you might as well be sport climbing.
This discussion is about altering nature to better suit your abilities. Climbing big walls includes risk. There is loose rock all over El Cap. If something loose can be avoided, avoid it. If it must be climbed, be careful.
It makes sense to me to trundle that block to avoid injury or death. Pick a day in the dead of winter.....with no one around.....and send it.
Didn't that death block on the Nose at the hanging belay below the alcove that was held in place with a pile of old slings get biffed in '97 or so during the winter floods? I was so happy to follow the pitch below and grab the rack and go at that belay in '94.