I really liked the idea they had of having the album cover be the faces of the members in pencil like the Rainbow - Long Live Rock And Roll cover...for it made that album even better than it already was, for having such a unique image associated with it. I am not opposed to a fan drawing the cover, as long as its good. Whether or not an Opeth fan can produce a cover like that is merely up to the talents of those who attempt to try.
To be honest though, i hope there isnt another Travis Smith cover. Not because theres anything wrong with his work...but i think having a new artist for this chapter of Opeth would be a good idea, and a breath of fresh air.