It would have been much better if the requirements were applied per account, not per channel. I have split my videos into several channels, because they were rather intended for different audiences and as a consequence the gaming channel will suffer, so I will put less effort on it, even if I enjoyed it much and I will put more effort on my main channel.
In short: the big will become bigger and the small smaller. Also, these new updates means no more experimental subsidiary channels will be made and creators will have to focus their efforts on only one channel and no point in creating new channels.