I've always loved morde as a Lich King (more magically oriented).
Right now other then his look he is lacking in the frontline armored guy(wraight?) departement. (He does have a "magical" shield but so does annie :))
For previous champion reworks like Sion it was a healthy change to choose between either AP or Fighter aspect and stick with one. It makes it easier to give those champions a healthy gameplay and make them up to par with the other current champions.
In this particular case I however would not do this and try to explain how you could achieve this :)
Like mentioned in a post below our beloved mordekaiser has on first glance a lot in common with the Lich King and even more to Sauron.
Suggested changes :
W : becomes now a sweeping attack with his mace, from right to left with a small knockback that stuns his enemies for 0.5secs.
https://www.youtube.com/watch?v=BhjDnrw34QA watch at 3:30 for the mentioned attack.
Q : make his Q a linear skillshot where he throws his mace to his enemies, staggering them for a short time slowing them for 40/45/50/55/60 %
reactivating his Q would summon his mace after a short while back to his hand (StarWars style where you summon your weapon back to your hand or even similar to Oriana) the move back could have a unique ability affecting all units is comes across on the way back.
These 2 changes are core changes I think (they don't have to be exactly like I mentioned abilities and effects could be different, I'm not a very creative person :D)
The GOAL of these 2 changes :
- make tank/fighter Mordekaiser a possibility (without any form of cc there is no purpose for him to become a frontline)
- giving him a way to initiate a fight (another very valuable tool for a frontline, not needed but highly appreciated)
- A skill shot to separate the good from the great mordekaiser's (raising his skill cap a bit can't hurt ;))
- merging the "huge metal dude" aspect with the Wraight/ Mage not only visually but also in his gameplay.
R is pretty fine to me and a unique and pretty much core aspect that defines current Morde so I wouldn't change anything here.
W : could use so changes but probably more on a visual side where there are weapons / undead creatures (previously slain foes ?) that whirl around him and act like a shield blocking projectiles ? The only problem I see with this is the readability of the move might make it look chaotique in team fights and I guess from a developer side it might take up to much resources making a skill like this ?
PS : my body is still ready : http://forums.euw.leagueoflegends.com/board/attachment.php?attachmentid=80276&d=1333011362
EDIT : changed the layout a bit. Sorry in advance for my bad English :)