I cant find the article from the original d2 devs, It came out when wc3 reforged was announced. The original devs said it cant just be a reskin because of how a lot of the textures and models are generated. It would be a rewrite of the engine. So expect a rewrite, which means it may not "feel" the same.
the rewrite for sc1 remastered went well (rewrote it without legacy code base available)
the rewrite for wc3 rf went terrible (failed miserably with all code/assets still available)
so it's kinda in the air for d2 (at least there's no cross play functionality or campaign editor needs) - well I guess I don't know if there's no cross play, I mean d2 remastered with d2 1.0, everything about that i google references d2 remastered cross play with pc/consoles.