That would make the characters with the most multipliers the strongest, as is obvious with Rangers right now.
u could be a Mage with same multipliers as Ranger
Fire * Highground * Crit.dmg * Atribute
"Atributes % * schools % * weapon mastery % * crit.dmg * high ground %"
Your words, that not only has 1 more multiplier in weapon mastery(warfare being a school), but also does not need a talent to even benefit from crit damage.
That's not even considering the fact enemies have high resistances to damage so you can't effectively focus on one damage type which doesn't allow you to stack on a single damage type by going Pyrokinetic * Huntsman * scoundrel even if you wanted to.