I have to say I completely disagree with you on quite a few points.
I want to start by making sure you understand that the art style means so much more than something being HD or shiny.
A good Art style is what allows us to tell the difference between a footman and a militia at a glance in an instant during the heat of battle without any trouble at all.
Don’t you think that what we saw so far was much more cluttered and harder to differentiate between units than Warcraft 3? If so it means the art style for reforged needs to be altered for greater clarity.
To say that what we saw so far was “perfect” is just dishonest, not even blizzard would say what they showed was perfect as they are clearly going to be changing things from this work in progress build.
What makes Warcraft 3 so great is that the art style was able to provide both function visual indications as well as innately show off the in depth character of all of the units. We know that an orc Peon is a funny, somewhat dopey little guy because of the art style, the way his face looks in the portrait and combine that with the iconic “Work, Work” and you see how it isn’t just an HD orc worker, it’s that goofy peon dude who builds your burrows who you know and love.
There’s so much good in the original art style and so much to learn from and emulate that is just so much more valuable than just making some shiny HD units.
Remember that there’s a reason why Warcraft 3 is still played today and dozens of other rts games have come and gone.
There’s a reason why those old campaign cinematics still hold up today.
Warcraft 3 is truly a masterpiece and to reforge it with some shiny HD graphics that don’t at all preserve the spirit of the original game does it a disservice.
TL;DR Reforged art style isn’t perfect, Warcraft 3’s style is objectively better from a functional point of view, and to reforge Warcraft 3 without preserving what made the original so great is shameful.
Learn from what made the masterpiece so great instead of trying to out-do it with HD graphical fads.