The health of the rucks does seem perilous, but I suspect that it is actually better than what it appears. I really don't like Sandilands and Griffin in the same side as they don't offer much as forwards. Clarke I am just assuming isn't available because he is now "the guy with the fitness issues and rarely available". But Apeness and Taberner, and even guys like Collins (and I guess MJ) can offer enough support ruck work if Sandilands is out there.
I am in the camp that hopes Darcy jags a development game or three, especially if the season progresses to a situation that allows it, either because we are brilliant and want to rest someone, or rubbish and are looking to the future.