The problem with those whooshs and flashs is that -especially if there is a "hit star" envolved - they indicate that there has been a hit - even if the attacker missed. However, I like them, and my adventure is in a comic/manga style anyway...
I use these
to indicate that there was a hit. Unfortunately I have not found out yet if you can use such animations when the attacker (e.g. a monster) is not carrying a weapon. Well, I could make a weapon with no effect on Thaco/Dices for some monsters...