Actually, I think it's very good. Of course, we can argue about some outdated mechanics here and there. Developers are changing things slightly to make the game more digestible and modern though. What makes it stand out to me the most is the visuals.

I can't point out what I disliked in D3 and actually MOST RPGs these days -but I think it might be that generic "make it run on all platforms" 3D graphic. Somehow they made it look like it's still 20 y.o. game but contemporary at the same time.

I believe being so old school visually and mechanically wise - somehow this game transcends most of its clones, successors and offspring these days.