Sorry Jim, but your assumptions on particle pollution do not match medical science. You are forgetting we evolved to live about 35 years. It is the micron size stuff that gets through into our deep lungs and causes disease. It takes decades.
Another miss-conception is closing all the holes. Dust collection works on airborne dust, so it needs airflow. The problem on most tools is getting the airflow where you need it.
In my shop, with my old Jet 1100 1 3/4 HP with canister, it got the big stuff sort of but loaded the canisters in just a few cuts, dropping the flow tremendously. I had to remember to spin the flappers every time I used it. Improvements to the airflow under the saw made it a little better. Lots of dust out the top.
Dust collection is only religion if you decide to ignore science and make up justifications. It is your health, so believe what you will.
Prototype guard port: CV with 6 inch ductwork to the cabinet, and a take-off 2 1/2 I can move from saw to router fence. If only "ported" tools, I think the 3 HP Onida ( more expensive actually) would have worked, but I am hoping the massive flow from the CV will work behind my miter saw rear hood.
FWIW, the taller the cyclone, the more efficient. The short cones on Griz and Jet work, but you will notice on industrial cyclones as well as the Oneida and CV, much taller steeper cones. One feature of the CV is backward inclined blades which allow for higher pressure drop than strait fins. Oneida makes HP collectors too.