Mordekaiser balance considerations

This champ is a bit rough. His passive is great but honestly ineffectual before mid-late game. I get his Ult can be broken as all hell but there is a summoner spell, several items, and many champ abilities that counter it rather effectively. Any shield ability can prevent the Ghost, Spellshields, Clease, Quicksilver Sash, the ways to counter that ult are MASSIVE. In fact its at the point where you NEED ignite to make it work since its a simple dash to a back turret for a shield to help prevent the damage from the ult alone.

Honestly the only things I think he needs to get a little more competitive is a moderate slow on his E you could even reduce its base damage a bit as a trade off and up his MS a bit to help with his NO escape. He is currently at 340 MS if you boosted it to 345 and gave him like a 15-20% slow on his E I think he would see a bit more playability.

Another issue is the Health cost on his abilities. I don't think they should be taken away but for a Mage who spams such abilities it counters the shield passive. Maybe reduce the amount they take. I would say half them but that might be a bit drastic Maybe -5 at all levels and see how that plays first.

What do you guys think?