Melkorjunior wrote:
the best example of this is last year's Superman by Gil Kane HC collection - I was truly looking forward to this & when I finally got it, I found that there were a couple of covers missing because Kane didn't draw them - though, the respective comics themselves were included. The whole point I buy collections like this is so that I won't have to get the individual floppies, so skipping covers almost defeats the purpose of having these collections.

Have to disagree. It's Superman by Gil Kane. If I was a Gil Kane fan and I bought that book I would want only Gil Kane work represented.
Well, we can agree to disagree.  I have that collection, and it's incomplete - the covers of several issues (with non-Gil Kane art) are missing.  So, if I want the covers of those issues, I now have to go buy the individual floppies - which I won't do.  If they didn't want the non-Gil Kane covers to interfere with the "flow" of the book, they could have reprinted them all in the back, as part of the "Extras" (though DC collections rarely have any extras).  In any case, this is one of the many issues I have with creator-centric collections, especially by DC.