User blog comment:Berryeater/Item suggestions/@comment-5035765-20160526013847/@comment-26378838-20160527124438

"I am still mad about FQC getting nerfed because of non-supports building it, being a main of mage-y supports."

Word. It's always a disgrace when support/jungle items get gutted because some other role had the bright idea of abusing the items, but alas, that's the nature of the game.

About gates on support items, one easy gate is giving an aura or a tether-the-carry effect with a trade-off; for example, sacrificing a percentage of the support's  to augment a carry's  by the same percentage.

The carries will be buffed the same no matter who is getting the item, but supports sacrifice less of their  because they won't be buying as much, but, who builds a lot of , will be hit with the sacrifice by a lot so he'll be wasting his precious gold (considering gold-generating items aren't very gold efficient and only pay up several minutes after) on an item when he could spend it on a proper damaging item.

The only issue I'm yet to see a solution is stopping champions like marksmen or from building the unfinished gold-generating items that doesn't involve making the Tribute passive disable even harsher, like being longer or even reducing gold gains by last-hitting by building the items.

PS: I build the line and  on support  and, with the bonus  on the first. Works like a charm.