Cool death sound/animation, please!
One of the incredible advantages of D1 over D2 was sound - not just the music which was 10000x better, but the sounds of dying monsters.
Like the Zombies which gave a loud splat sound, Fallen ones that sounded like choked to death and scavengers with their bug-like death squeek.
D2 had very crappy and mundane sounds - Zombies gave a sigh when killed, fallen ones - just a random scream - Idk, all the magic evaporated.
Same for death animations - idk, in D1 they felt - or rather, still feel - very rewarding, the skeleton falling apart, the scavenger tripping over, the death knight dying in some soul-explosion, succubi bending over

D2 death animations are unrewarding and boring.
I hope D3 gets back on the right track, since - as far as I can tell - more of a sequel to Diablo 1 than Diablo 2 ever was.