I think there some people out there, who don’t like the stories told in 5th edition D&D. If you are old enough, you can see how some of the releases are just regugitated versions of better products.

That being said, the 5th edition designers are not afraid you using what is at their disposal, including Vecna. Personally, I think you have to be very careful using these mega characters too much, as the mystery surrounding them diasppears. Wizards do not see it that way based on what I have seen about Vecna: The Eve of Ruin.

I am not going to buy this book, but I will keep my eye on Professor Dungeon Master to see if he posts about sales figures as he sometimes does.