1) It looks bad visually. "Stop-frame" animation with such gorgeous detail.
2) I'm afraid this will destroy most of the tactics the old game provided without giving anything in return.
3) And most importantly, it does not suit the style of game itself. There are always more enemies, but in the original game I could kill one, immobilize the second and hide from the third at my turn. And here - I beat one, everyone beats me, I beat one, everyone beats me and I lose. In fact, the end of the video demonstrates this.
I really hope that the author will change his mind and return to a proven system that can be improved, but should not be broken.