Question about Hexblade infernal pact bonus

[Nemesis Destiny]

Actually, a 1/5 share of the treasure gained from level 5 to level 5 is more than enough to buy a +1 weapon (or implement), and I believe that would hold true at higher levels as well. So it's relatively trivial (given what I'm assuming as standard assumptions) to have an item that would be at most 2 points behind the enhancement bonus of your main weapon or implement. Now, admittedly the Hexblade doesn't have to pay for even that, but while it would be a significant bonus, I don't think it would be unbalancing.

That's the thing though: it's trivial to have one a couple points behind, but the Hexblade's will be at the same level as his primary implement, because, in effect, it IS his primary implement, if DIS is allowed to work with an AIPed Pact Weapon, since it inherits the bonuses.

I'm not saying it's crazy good, but I think it's enough above damage expectations, especially where it concerns balance with other similar strikers like the Slayer, that it will see some nerfage.

I don't think it's enough of a difference that it needs a nerf, particularly, but what do I know?