To be honest I think you all need to look at the bright side. For one we have no choice so you should just start liking it haha. I havent noticed a drop in comments since it switched over, and they all get shared on your google+ so it makes for a great way to connect with your audiance via hang outs etc. Google+ is a nice system and has a lot of great features, but no one uses it. Maybe now that more people are using it (although they were forced) it may turn out to be a great way to grow your channel.
Id say instead of complaining look at the bright side and start utilizing what we are forced to use! While everyone is complaining you could be out getting a edge on the competitors with google plus!