[{quoted}](name=Lord OwlBear,realm=NA,application-id=3ErqAdtq,discussion-id=PaVYTKwW,comment-id=0002,timestamp=2016-02-23T18:59:43.128+0000)
I would go as far as to say there should be an armor version of
so mid champs don't have to get set back when they have to go out of their way to purchase 
If AD mids can get everything they need defensively with Maw (MR, free anti AP shield) or offensively with Duskblade (MS, armor pen, bonus damage proc), i'd like AP mids to have the same kind of options. The problem is, all AD champs need at the core is AD and any amount they buy is going to be more cost-efficient than AP on it's own because AP absolutely need mana and/or mana regeneration and/or CDR.
Most importantly, early first-back items that build into actual items for AP all need to be reworked and improved/merged. Sheen is offensive and supports mana but demands taking risks and doesn't help sustain. Catalyst is a decent sustain item but gives literally nothing offensively until it's often too late. Chalice gives enough mana to lane but is hardly more than a burden against AD champions. Codex may give CDR but doesn't help with mana/regen so you basically just run out faster. Aether Wisp gives mobility at the expense of everything else. Seeker's Armguard may help against AD champs but requires time to come into full power and is just not sufficient in terms of sustain or even protection with all the armor pen running around now.
To be perfectly honest, i say scrap Zhonyas and it's active so that people can stop saying 'But you have Zhonyas you don't need anything else!', and build us a pair of genuinely good anti-AD items for mages. You want to stop an AD's burst combo? A purely anti AD shield that functions similarly to Maw's anti-magic shield would do the job perfectly without having Zhonya's massive downsides.
Something could also be done to make fully stacking Archangel's Staff more rewarding.