Riot can you make different Items for AP mages and assassins?

Or just nerf the cooldown if Fizz's E,either one. http://images.akamai.steamusercontent.com/ugc/36357635592724233/A32679C5E8B2E28E91D9B7DC2950DC4260F88776/ So in season 6 Riot has removed CD from a lot of AP items saying they want mages to choose between damage and support cooldowns,since mages have a ton of utility in their kit and this seems like a ton combined with their damage. This makes sense as they were practically able to almost effortlessly beat the adcs almost every time. However mana has also been nerfed, and due to constant pairing CD is nerfed as well. However though, while mages have to choose,an assassin will go with damage 100% of the time. making this a nerf to mages on the whole,even their defensive item . Also since the game is becoming more and more damage oriented, there need to be some items released so that mages can get some cooldown and still have damage,since,lets be honest,they now have no chance against adcs even though the adcs had a chance to beat mages pre nerf. Also assassins dominate both mages and adcs, so as they go damage based some items for them so that they can't go Riven 1v5 into the team and juke everyone and everything ?