Premising that the game is a masterpiece and that the only things that are missing are other contents of the fifth edition of D&D, but I am sure they will be added subcessively with expansions and DLC. The icing on the cake would be to add the Dethblows taking inspiration from Dragon Age, simply violent animations as the last blow to the enemies. At the following video an example of what I mean.
Absolutely, added animations can greatly enhance the overall flavor. I've previously recommended incorporating more miss animations, particularly so a fully armored Paladin doesn't appear to effortlessly dodge every shot. Your idea aligns well with that. This could also be a good mod as well, if feasible.
