It's normal that fans don't like changes done in each new iteration of their favourite games, I was a bit dissapointed as well when the first pics were shown, didn't like the mood at all.
But Blizzard being what they are, they take heed of their fans complaints. While they are trying to stay as true to their vision as they can, they are also trying to get more of what fans are asking of them, and that's why they are one of my favourite developers.
They just need to release Diablo II 1.13 patch ASAP >_
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"