The design's cool-factor doesn't kick-in for me, so I do not like how it looks.
If I were to nitpick, I'd point out the shield on the arm, the autocannon appearing too "high-tech" (I thought it over... sadly that is really what I mean), the head, and, as doubly important as any one other thing (because there are two of them), those freaking legs. Why the hell does a 50-ton war machine have crossbars/stop bars on the knees? ... ..
Yeah I am backwards sometimes, but it does not appear to fit the Battletech-esque idea of a tank-like machine. The calves and feet are just completely backwards to the feel of Inner Sphere BattleMechs, and especially the Centurion. That 'Mech that FB drew looks a whole lot more like something that's supposed to be fast and lightly armored, especially compared to his own interpretation of the Hunchback.
... and to think, I might have hired him... (lol dick move, right?)
It's excellent art and it looks really cool, but it just doesn't feel like a 50 ton, low speed, walking tank. I'd be much more approving of it, were it an interpretation of a Clan 'Mech of identical weight and speed, but, alas, it is not.
I'm just one guy with one opinion. It is a successful re-interpretation of the TRO 3025 Centurion, and definitely improves the look of the chassis IMO, just in the wrong direction.. again, IMO.