User blog comment:NicknameMy/Mordekaiser, the real bruiser/@comment-1330314-20150203090614

There's a lot of invisible power on this kit that does nothing but make it harder to counter Morde (halved penetration effectiveness on his shield, reduced QSS effectiveness on his ult), and your buffs don't really address any of his problems: he's still super-dependent on spell vamp and abuses it hard, he still has really oppressive and low-counterplay poke in lane, his passive still makes it really hard to see how much damage you're really dealing to him (more so, in fact), and his new Q isn't really going to keep him from playing like a poke champion.

I don't think Mordekaiser really needs crowd control, particularly on the abilities where you added some, nor does he really need mobility. Overall, you might want to rework his kit a bit further, but I personally think he should feel like a magey bruiser, and not the tanky melee poke mage he is right now.