I think it's very important for him to have mechanical freedom and not be stuck in anything resembling a power system.
Mechanical freedom? What mechanical freedom? The freedom to do nothing but swing his sword over and over and over again because no one in his right mind would ever attempt disarms, trips, grapples, bull rushes & unarmed attacks unless they happened to blow feats on them to become even slightly competent at it?

At least in 4E fighters got to do most of those things successfully at least once an encounter. Sure, he couldn't do all of them over and over again as he might want... but at least he could be built to actually accomplish them occasionally with a modicum of success. Heh heh.