I really like circle hooks and use them for most bait fishing situations today because they work well and the fish don't get deep hooked except in very rare circumstances.
However, I've tried circle hooks for bluegills and the number of deep hooked fish actually has increased markedly versus light aberdeen hooks and flies tied with J hooks. That was unexpected, but I've done it enough to convince myself that I won't be using circle hooks for bluegills again. Bobber fishing with circle hooks has yielded almost 100% deep hooked bluegills in my experience.