I don’t think you’re understanding the word ‘hitstop’ if you are animating it. Hitstop is a short ‘pause’ in the animation of both the person who attacks as the person who is hits/blocks. During this time neither character moves (or the person getting hit shakes back and forth slightly, as in SF4 and KOF). This is useful for several reasons: First, it gives the move a bunch of impact, which is something that is definitely lacking in the game right now. Second, it gives players time to process what is happening.
Almost every fighting game has hitstop (hell, even Smash Brothers has hitstop), and it’s a rather essential part of both making the game ‘feel’ right and making it play like a fighting game.
It’s sometimes also called hitpause or hitfreeze, and it usually lasts about 7 to 15 frames, depending on the game and the strength of the hit.