Just change as little as humanly possible.
Tiny things are ok, but not too much. Postpone optional heroes to AFTER launch!
Make a great recreation to how we remember Warcraft 3 first and foremost without altering it too much.
I personally think the artstyle is great, but be mindful of silhouettes and the readability of the map. All units in Warcraft 3 were great because you could instantly read the screen and what units were there (an example as brought up previously is the outline of the footman’s shield)
Please be careful when retconning lore and locations like Stratholme. Warcraft 3 had a certain feel to it and many of us like the old maps, which are an integral part of the Warcraft 3 experience.
As a WoW player since classic, I want Warcraft 3 to fundamentally remain Warcraft 3 even if it clashes with WoW canon. I understand you want to change the maps a bit, but let the “Warcraft 3 vision” of the game guide you throughout the designing process.
Thanks for listening