I actually hated those in DA:O - real time game system locking me in some forced inescapable animation.
I could see special finishing moves for crit kills, as long as it’s not too indulgent (in length and gore) - like Gibbs in original BG1&2. Though in case of BG1&2 I would turn those off, due to hot ridiculous those meat explosions were. I was a big fan of fallout1&2 kills, but that’s a different feel/aesthetic.