I had messed around with the new approach on the test site, and had no real objection to it or anything particularly in favor of it either. I suspect with time, I;ll be fine with it,
I do have one issue that involves this topic: https://secondhandsongs.com/case/65418 . This relates to the submission of the work "Seduced" and several covers. I think I entered the original and all covers on February 8th, and I believe I delay locked the topic. I noticed that on the new interface, the "Seduced" submission showed up as open. I couldn't simply lock or delay lock the topic with the new system. To close the topic, I had to reject the submission, although I had already processed it, including all covers.
I note that a couple of other editors have said they had to reject submissions in weird circumstances since the new interface went into effect. That is my one current issue (I haven't worked much with the interface yet on the actual site}, but I'm hoping I have no other problems or issues. I'm sure the new interface will result in a reduction of the speed with which I can undertake editing functions for a while, but I also suspect that in time, that will no longer be true.