I very much doubt we'll see any more Black butler from AL, unless they got the license directly from Japan, the curse of Funi again, as for the CE debate, not getting involved, people know my opinion, so don't need to repeat,
Waiting for materials seem to be the go to excuse for AL nowadays, Twin Star suffered from that one, seems it still is, as we probably will never get any word as to why it's slipped to October/November to be completed.
The question does remain, how long is too long to wait or abandon and import, for me, no more than a year, I got sick of waiting for Durarara x2 part 2 onwards, so I just imported from Australia as it came out. I'm beginning to tire of the constant silence from AL of titles they seem to have forgotten or have little love for, so why not just let somebody else release them, "no can't do that, we have pretty boxes and books in the pipeline" is probably the reasoning, but again how long before the ever critical UK anime fandom tires of them and just buys from somebody else, oddly enough, that was the advice somebody on here gave me, when I got annoyed with Andrew about the 6 month gaps, he seemed to find quite acceptable.