I always thought they could put more emphasis on his pantomiming
Like say he could pantomime the invisible wall and it creates a wall that allies could pass through, but mobs get blocked by, probs with low durability, and can still be hammered.
Or he could use the bicycle pantomime to move slightly faster for quick exploration.
And his rope pulling one could pull items from a distance. Say someone died in a big wave of enemies, wes could retrieve the items for them.
All these things would cost sanity in some form, like the bike would probs be overtime while the walls would be an instant cost.