I considered Klaus, but he is a well established wizard, the first person the Senior Council would ask, so obviously they asked him and he said no. Still no new swords. His deadly devices are based on innocuous toys, a sword is not a toy, so it may be some eccentricity on his part that prevents him from acting.
They would not ask Harry, even if they were aware of how extensive his skill set is in this area.
Staffs and blasting rods are both foci, the staff generally but the blasting rod specific to producing fire.
The White Council couldn’t be seen to be contracting it’s enforcement to a third party, it would indicate weakness, doesn’t mean they don’t, I suspect Rudy was in the Merlin’s pocket and they were looking for a mundane legal frame up.