Diablo pretty much died a long time ago. The only people who still play Diablo either A) have low-end systems or B) no wait, pretty much just A.
Actually, almost all the old games are superior to new ones except in graphics, new games are only graphical, and developers forget about the storyline and gameplay, i'm not saying that all the games are, but most of them are just copies of one another.
Plus, Diablo 2 is far away from dead, sure, the players who have low-end machine play this more than high-end players, but still diablo 2 has over thousands of players, maybe even more than 100 000 which is pretty big accomplishment to come to think of it as an old game.