I just found a piece of Mordekaiser concept art for the Pentakill Video depicting his base look
https://www2.pic-upload.de/img/35355365/Bildschirmfoto2018-05-21um02.07.04.png
Honestly, I think this is a great exploration of how he could look with a VGU'd design! It's not overly goofy with over the top spikes and strange proportions but really drives home the point of him being this towering Behemoth of a man clad in scorched black armour. He looks imposing without looking too burly and brutish and the design on his harness looks simple, yet very imposing. He really looks like an ancient Warlord as the armour does look like it stems from simpler times, lacking a lot of ornamentation but still radiating power.
At this point I'm just way too thirsty for ANY Mordekaiser content >_>