It is just something we don't really have, per say. Sure MF and Ashe could work in the support role, but those are more ADC-esque champions than supporting ones. The champion should not really be able to be the ADC though, if possible. And if there are plans, what about an AD based gold income item? Like an AD version of 
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Ralanr1 votesAs much as I'd like an ad based support, ad itemization is expensive and if they were more bruiser focused then they'd just build relic.
Also Alistar should do freaking physical damage.
OurLestrade1 votesI've never really seen the appeal that the idea has to so many people. Since you won't be able to really build into it and everyone gets armour, it'd make your damage fall off even harder than magic damage.
JavelinJoe1 votesWell, they could be more of an early game pressure where they fall off a bit late and can substitute some defense for some of their AD items. Or maybe they can convert some defense to AD maybe?