Current minion block is horrible
So how about instead of minions literally blocking you get slowed for every minion you are touching with your champion model?
PD and other Abilities would still keep their benefits, it would just be a buff to Swifties and abilities that ignore/reduce slows. But if that is an issue, you could just define the slow as a new cc, called minion block and have it not be effected by slow altering effects.