Why dont make mages Auto Attack escalates on the AP rather the AD
once a Mage runs out of Mana or a combo don't finish off a champ, Mage champions are basically naked, cause as the game escalates, their AA damage power is just like drops of water, until the cool down is over (5-10 seconds depending on the champion and spell)
it dont have to be a 1:1 AP to AA damage (cause AP builds easily on the 400-500 aside from the 200-250 AD does) so it can work on % and thresholds, once reached the % of AP to AA damage decreases.
get that high, or anyone that builds [
+
x5], and not every mage has a 1 combo kill kit like
,
or 
now they do!
) you get 40 AP on start that translates to 56 AA DMG (by my idea tho) , add 9 Seals of flat AP, and you get 46AP = to 64 AA DMG