I wouldn't mind if they nerfed that combo by reducing the amount of walls that Binlor destroys. I'm not a fan of the fact that the boons weaken themselves by using up the resource (walls) that they depend on.
I'd especially love it if the boons CREATED walls instead.
Edit: Making his first boon destroy walls instead of create them would leave the combo, but make it the actual use of the boon instead of it being useless like it is currently.