You have a point, but just like cars, you just cant help to want a motor with a lot of horsepower and torque even though chances are you will never use it. However you are right, but I would limit it down to 15 bps, any marker that can do that, have a consistant fps each shoot, little kick, and fairly light is enough to compete with any other marker on the market. If it was up to me, all tournaments would have a 10 bps rule.
As for the plastic, you are right on that also. I am not sure what type of composite that are using, but I do know that agd did a test with their composite single trigger frame in the late 90's. They used it as a "link" between 2 chains and lifted a Miata into the air and it held up. I seriously dought the pmr frame is that strong, but it shows how strong a composite type frame can be. I have been trying to find the picture of that, but I just cant find it again.