Ugh. I just don't get it. People want the same thing, again and again, edition cycle after edition cycle?
Haven't new settings enriched the game, offering different play experiences? Don't we want new worlds to explore, new flavors and experiences, if only to draw from for ideas for our own world?
Here's the best part: They can do both, at least to some extent. They can publish classic settings and new (Magic) settings -- which is exactly what they're doing. It isn't perfect for those who want only old stuff or those who only want new, but it does give everyone something.
I mean, what else should they do? Only regurgitate old settings to please traditionalists and older players? Only publish new stuff to please those that want it? Or, just maybe, do their best to offer some of both?
Or how about this: Publish one classic setting and one new setting each year, be it Magic or something else (e.g. Exandria).
Seems like a no-brainer to me.