Why League needs a dedicated AD mage

A dedicated AD mage would mean that midlaners who dislike melee assassins can have a great pick if their team comp demands they pick a physical damage champ.

Currently, several champions are somewhat close to being an AD mage, but sadly, each one of them deviates from a true mage playstyle in some way:

usually gets a zeal item or two . Pure lethality GP that relies only on barrels is vsomewhat mage-y (albeit having only 1 real damage ability), but sadly isn't as good as a mix of AS/crit items and lethality because the barrels are so unreliable compared to right-clicking. Maybe if the barrel was a normal AD scaling spell with a generous base damage and ratio rather than balanced around being an AOE autoatttack that can potentially crit and apply to everyone hit, GP wouldn't have the ridiculous power curve he has today.

Riot really wants this guy to be a Marksman, considering the recent Q CD nerf and Passive buff. Also, when he does adopt a mage-y playstyle, he really only has one main damage ability (E has very low scaling/short range, ult and W scale off AP). While that one ability may be very oppressive and unfun to lane against, actual mages like have multiple damaging abilities that scale off the stat they build, and require the player to use all of them.

Riot buffed melee form Jayce several times last season, making Jayce's combat pattern closer to the likes of . Ranged E serves as a MS boost (Marksman/Fighter tool) and to facilitate the EQ combo; W, of course, being just attack speed, makes yet another almost-AD-mage with just one "mage ability" scaling off AD.

Q single target and essentially a skillshot auto; no waveclear.

Does nearly all magic damage, presumably an AD mage would do physical damage.

Technically you could say that a Graves playstyle focused on bursting with Q and ult is very mage-y, but the problem is that if they live/if you miss, your autoattacks still do a ton of damage. So much so that is a common purchase, even though his Q and ult have great AD scaling.

Ult is pretty great for an AD mage, but outside of that almost all of his damage comes from autoattacking.

Too short range on Q and E to be a mage; even close range battle mages have longer range than him

Has very mage-y abilities at first glance, but doesn't play like one at all

I'm assuming that the main reason a real AD mage has not yet been implemented is because having access to 3-4 powerful, ranged, AOE AD-scaling spells is super OP when you consider that they can also auto attack. So, the champion would have to either have melee autoattacks, some kind of autoattack damage debuff against enemy champs like has, or something really weird, like not being able to autoattack at all.

OR there could just be an AP-scaling mage who happens to do physical damage. That would also work.