Well, quite simply put, do you believe Ray believes in the tale he's telling?
Let's look at the world he and his friends created: Midkemia. It spawned further worlds, creating an entire universe, full of potential for stories. As it's went on, Ray has introduced a myriad of different creatures, like the Dasati civilisation in the recent books, and in the new book, a new breed of Elves. Not a fan of the latter, but I really enjoyed reading about the former. Ray showed excellence in his ability to create their civilisation. Indeed, I think Ray may have had the most fun with that one, than he has had in a long-time.
But, I couldn't help feeling with the new book, that it's lacking a bit of self-belief and purpose. It's part of the reason why I still haven't read it all. I find it unreadable. Can't get into it, at all. That's a different discussion, though.
I've always felt with Ray's story-telling that one their main strengths lay in the direction Ray's been taking in them. Of late, I find this lacking - they're a bit aimless. He seems to do a lot of 'beating around the bush', to get his point across. It shakes my confidence in his ability to complete the Midkemia Cycle adequately.
So, I want you to consider whether Ray has lost his own belief in what he's writing, or if he's just pushing on to get to the finish line.
And for those of you who feel that once the Cycle is done, Ray's done; I advise you to check out his non-Midkemia book 'Faerie Tale'. That book was written quite a few years ago, now, but it shows Ray has plenty of ability to tell different stories. And not just of the traditional fantasy yarn variety.
(Had more to say about this, before - indeed I'd written it, but due to a browser malfunction, it got deleted. I'm not done saying what I have to say, really. But I'm hitting a bit of a crutch, so I'll pass it onto you people)