They look really nice. In my experience, the blasted glass seems to be pretty mellow anyway, and the soft maple doesn't have enough energy in it to help. I get much better results at a 3" size. You may be able to get more out of that combo by changing some of the call dimensions. Also, sanding the glass will help. I usually sand down until it feels like 50/50 sanded vs blasted if that makes sense. For strikers, I get more pop out of purpleheart, ash, and apple. Apple is interesting because it gives really strong yelps, but they stay at a medium pitch.
Just my thoughts, may not be the right ones. Good job though!