I don't think it should be changed, it would require a re-haul of all the characters entered thus far.

The only exception being special cases where a character has a significant limitation to go with their strength, so that everyone of that tier doesn't immediately want it.

Frankly this whole 'being dedicated' to just strength thing seems like ballshit to me, are you saying you're not going to have superhuman endurance and constitution to go with it? Yeah, right.