Morde rework idea from a friend

Talkin with a friend on skype and this is what he typed up.

"Random idea for a morde rework: Passive: killing enemy units takes the metal from their body giving it to him as bonus health equal to .5% of his base max health (stacks infinitely). Also grants a shield equal to .5% of his current health for 3 minutes (also stacks infinitely but stacks fall off as you get them). Increases cost of health costing abilities by .5% per stack Other change: Q: grants a free stack but no shield of his passive whenever used to damage an enemy champ Last change: E expunges shield as bonus damage but refunds part of the shield if it damages an enemy champ (e shield lasts only a few seconds) more metally

I just thought of it cause Morde's current passive shield is really awkward and finicky. The game doesn't do a real good job of making it clear Oh yah Morde also gets bigger slowly as he gets stacks A lot slower than Cho for example"

so Morde Mains, what say ye?