Teleportation question

[Belle Hibiki]

I would like to ask, before that, what the logic is behind a discount in the first place. I don't mean this in an inflammatory sort of way, but it seems like the setup for an ugly mess - if not regulated. If people with Ki Spec get a discount on ki-attacks, there's really no reason why Combat Teleportation wouldn't give a discount on Travel Teleportation.

But then, I have Inner Strength and a buttload of Strength score. Do I get a discount on physical techniques? Or a discount on all abilities that involve reading my opponent due to Foresight?

A discount isn't such a bad idea, but if it's going to be more widely applicable - which logically makes sense, given Ki Spec's advantage - then there should be a uniform discount amount (10-20%, perhaps), rather than ad hoc estimation and guesses as to what kind of ability discounts what kind of tech.