I guess you don't play against eldar or GK much.
If Eldar, he's running Wraith units, and therefore I don't see the problem. Against Grey Knights, if he's getting into melee and pushing through wounds and then passing his test to activate Force Weapons through SitW, I think you're doing something wrong.
Yes, it's a minimal change, but I only thought a minimal change was necessary anyway. Besides I prefer the slight tweaking of the IB tables as a fix anyway.
I think if Nids are going to be houseruled, they need a fairly extensive change.