At the moment I think the formula for determining how many EFUSS points are received at level-up is still 1 + 1 per positive Intelligence modifier + 1 if human. An additional 3 is granted at first level. I'm not sure if the extra point for humans is related to "Quick to Master" or humans being more open to learn than others or something but I'd like to suggest that the extra point be given to all races, not just humans.
Alternatively, as humans are considered more versatile while other races are more focused, give other races a scaling bonus to their EFUSS abilities. Perhaps +1/2 levels? The extra point per level far outweighs the +2 some races get to various skills. Having it scaling may balance it out somewhat.