Separately, if we do make a super-late game weapon for ourselves, I think a chaff-threasher would fit better than a lord-hunter. Once we get Smoke and Mirrors, we can effectively fight low and mid tier enemies forever, and just escape whenever a serious threat approaches us. We have a counter to almost everything; massed range fire? Block LoS with Pall of Darkness. Cavalry charge? Smoke and Mirrors behind them on shadowsteed, see how fast they can turn around from full speed. Massed low weapon skill troop wave? Good luck landing enough hits to put us down in a single turn through our massive collection of defenses, we can just warp away if you don't, plus they probably die before us from the retribution rune alone. Magic assaults are a thorny issue, but a sword is a moot point against, say, a headbutt spell. With our new mastery, we don't even get fatigued from any of this. Thus, the only ways we would be removed from the field would be a magic attack or us intentionally charging into a melee opponent who could kill us really quickly.
An assassin style sword would give us a decent chance against such foes, but we will gain the skills to avoid having to do that, and could instead chose a sword optimized for cycle-charging the enemy backline forever while running from anything heavy.
