That's still not a case for necessity. You have yet to offer any evidence that exemplared characters need this. The fact is, you can't, because they don't. This isn't a question of adequate performance, it's dick measuring with a micrometer. Worse, it's doing that measurement in a vacuum, ignoring everything else the exemplared character has and can do, that the exemplared character is more rounded and fleshed out in every way.
Okay, so the lowbie deals a few more points of damage with the same attack that the exemplared character uses. Let's disregard the fact that the exemplared character has a stronger attack, one which is unavailable to the lowbie because he/she hasn't leveled up enough to acquire it. Let's sweep under the rug the fact that the exemplared character's powers are recharging more quickly than the lowbie's, because he/she has enhanced values that the lowbie can't have due to lack of slots. Let's just overlook the fact that the exemplared character has better endurance management, better HP management, better damage mitigation and a better hit rate than the lowbie can hope to achieve because he/she has more powers, more slots and more enhancements. Let's panic and scream for the developers to change the system, so that one fucking number is the same, because that's what matters, right? Not who's better in every way, but who has the bigger number on one power that the exemplared character might not even use because he/she has better tools to work with.
No.