I Disagree
I disagree with this principle. In practice, I tend not to alter the value of a Limitation. However, I do take into consideration how much of a Limitation it will be within the context of the entire game…which includes other abilities a character has.
If a character takes a Disadvantage of being blind, then takes Spatial Awareness, blindness is not so much of a Disadvantage. Granted, the character may not be able to read print or discern colors. That is still less of a limitation than being completely blind.