an idea for slow skills

I noticed that many slow skills stop feeling slow lategame due to the player getting increased attack speed. Some skills feel better due to being slow: it's fun to have to find an opening to attack the boss with a slow still. It's fun if there is some risk / commitement involved in using a slow skill, e.g. it could make me vulnerable versus a monster using a quicker-than-my-slow-skill slam attack at the same time. These aspects can get lost, if the players attack speed becomes too high and the animations therefore shorten.

It's fine that some players don't like slow skills, but others do and it would be cool to have the option for an effective "slow skill" playstyle were every skill matters and feels impactful.

My idea is to give certain skills the property "slow". They are uneffected by attack speed - their animation speed stays the same independent of attack speed. Instead they gain a damage multiplier based on attack speed - the more attack speed you have, the higher the damage multiplier for slow skills. So both normal skills and "slow" skills could scale their damage via attack speed: the former by attacking more often per second, the latter by gaining a damage multiplier.