Let's review the mech:
Inverted leg structure: Check
Sweet Guns designs: Check
Suitably beefy limbs: Check
I ♥ mechs!
One point though, isn't the pilot a tad exposed? I mean, it's possible to pull off a head-shot on any mech, but that usually requires something like a Gauss Rifle or a Particle Projection Cannon to actually have any effect. Yours looks looks like it could be brought down by a lowly 9mm, just say'in.
the cyborg troll was a great idea, though his arm could use something to flesh out the four studs facing front.
Idius Stupendus is a stroke of sheer genius! no wait...