That pixel art is great because you can tell they're pushing up against the absolute limit of what they're able to convey within their technological restraints, and you use your imagination to fill in the gaps and smooth over the imperfections.

The concept of a hand-drawn-style remake isn't bad, it's just that creating good-looking assets would take even longer than the original pixel art if you wanted to have something similarly evocative, and nobody is going to pour that much time/money/effort into it unless it's a labor of love.