A basic vit modifier to make the stat useful and even wanted as a part of equipping characters.
The modifier works as follows:
base debuff time=BT
Character vit=VIT
Total debuff time=DT
Mean vit is 40
the modifier would work simply as DT=BT*40/VIT (If DT<0.1, DT=0)
that is to say Time of debuff would be equal to base time times the mean vit divided by the individuals characters vit.
For Example, a knight with a total vit of 75 hit by a 5 second slow would only be affected for 2.6 seconds.
An Assassin, on the other hand, with a score of 40 would still be subject to the full 5 seconds.
with average vit (not including equipment) being 49, a 5 second debuff would last 4.1 seconds.