While I actually like Beast Nero (sue me), the Todd Howard idea is pretty damn funny especially considering I had an idea to do him as a joke sheet Caster with a Reality Marble, Single-Mindedness and Golden Rule. I'm curious to see how yours would turn out then.
This is the hardest part in writing modern Servants.
In comparison, I have a WIP Nazi Sheet and trying to find the right balance between writing an interesting character and not making it seem like she is meant to be 'cool' is so damn hard. I settled on making her literally the most insufferable person in the world possible as a balance between the rest of the sheet in regards to skills and such, but obviously that wouldn't work with yours.
I'm sure you can think of something though.