I love how people say we lack proper AP items for Morde to really be a Juggernaut
Mordekaiser is due for a VGU, we all know that, and every time the topic comes up people bring up the "issue" oh him being Magic damage based and thus not being able to spec into the usual bruiser items like 
But he really doesn't need to do that in order to actually feel like a bruiser, a Juggernaut. Mordekaiser has monstrous total AD ratios, which mean he doesn't really have to invest in a lot of AD for him to hurt, and coupled with really good AP ratios you get a Juggernaut capable of building whatever he wants to still be a threat.
And unlike Evelynn, Mordekaiser's Hybridity isn't a problem as it doesn't warp his gameplay into something Riot doesn't want to support.
Provides a bruiser like him with pen, ways to deal with tanks and great stats, serving as his "core" similar to Darius' Cleaver
with the buffs currently on the PBE this item is even stronger on him, providing him with a huge spike in durability and damage come mid game
Is THE damage item for him, making use of his strong dual scalings, giving him more survivability and just making his damage skyrocket
Most Juggernauts have healing and SV just makes Mordekaiser draintank even harder, really serving as the cornerstone of his in-combat survivability together with steraks
And lastly 
providing Mordekaiser with a way for his damage to not fall off late game as the 35% total MPen's even superior to BC's 25%
https://www.youtube.com/watch?v=L27FdXZjqIs&feature=youtu.be
Overall I think Mordekaiser already has the itemization to support his Hybrid/magic damage Juggernaut playstyle, rendering concerns regarding the item support for post VGU Juggerkaiser somewhat useless.
