Hi all i just found about this gem of a mod for the classic warcraft 3 - warcraft 3 rebirth!
The mod upgrades the graphics of the game almost like the reforged did, you should check this mod in this video i found - Warcraft 3 Rebirth mod Human Campaign - Chapter 01 The Defense of Strahnbrad (hard) - YouTube
Whats more is the mod uses the old warcraft 3 so that you can play custom campaigns with the upgraded graphics and it looks amazing.