There's actually an ingenious way to solve the whole FQC and Ap CDR crisis
Just introduce http://vignette3.wikia.nocookie.net/leagueoflegends/images/a/a5/Pox_Arcana_item.png/revision/latest?cb=20150707235519 http://vignette3.wikia.nocookie.net/leagueoflegends/images/4/40/Netherstride_Grimoire_item.png/revision/latest?cb=20150707235734 and http://vignette3.wikia.nocookie.net/leagueoflegends/images/d/d4/Rite_of_Ruin_item.png/revision/latest?cb=20150707235733 to summoner's rift.
These three items, Pox Arcana, Netherstride Grimoire and Rite of Ruin were Black market brawler items who all had the same base stats of 100 ap, 100% mana regen and 20% CDR but had very diverse passives who catered towards a wide spectrum of AP mid laners.
Allowing us to build those in Summoner's rift would add diversity, give more CDR items with varying effects and maybe even make Mid laners stop building FQC in favor of getting these items with powerful stats and effects.

, which are suboptimal for a lot of mid laners. So FQC is a dream for them, a very strong active, mana regen item, even if it was nerfed, and a way TO GET MORE GOLD and cdr, with 50ap to boot.
Oh boy, it sure sucks being a manaless AD champion these days, there's nowhere to get CDR.
.
which is very valuable but a bit of an underdog and
that are universally applicable. Still, your point makes sense aniway. That' s why i said that an additional cdr item would not be that bad.