As I see it there is little change on a day to day basis in most congregations, especially when it comes to recomendations for appointment. The CO will still be looking for some prompting on recommendations from the elders. The CO always had the power to stonewall an appointment. Where it is interesting is on a deletion. The CO could effectively prevent a deletion by not approving it. Now however, one would presume that he can recommand a deletion where the body have not proposed such an action. Hey presto, any people not percieved as company men get the heave ho. The CO can also more easily overrule any situation where he sees the body closing ranks on someone and protecting them.
I agree with the comments on the further erosion of powers from the local congregation but the real power has always rested outside - this is just a formalisation of what was already the reality.