I don't have the March System bid results handy (that's the last one with a decent amount of upgrades), but I believe the most junior CA on that one was 2380. The most recent System Bid had the last upgrade at 2253. So unless I recalled incorrectly, people who previously bypassed are now upgrading. The days of the most junior CA being in the 70% may be over. It could just take a couple of System Bids with 30-40 upgrades to lower it again, but who knows.