Anytime you increase suction you will improve dust control. My saw kicks dust forward too. I don't expect 100% collection, but a few design changes would increase it further from what it is now.
Why is it so many tools need modifications or add on parts that they should have come with them? [unsure]
The first photo shows the clear dust control window mounted to the saw. It also shows how the saw angles up away from the blade to clear for 45* cuts.
Second photo shows the saw with the side doohickey attached. You can see how it closes most of the side of the saw off. For cutting right at the edge of the board a piece of something, mounted where the brown phenolic surface is mounted, that slides down to the saw blade cut depth would greatly enhance dust collection. Seems to me having the phenolic piece slide down wouldn't be that hard, and pretty safe as the blade would just cut it. Kinda like the clear plastic piece at the front of the blade. The saw systainers supplies a relief to drop that part of the saw into so it doesn't retract every time you set it down flat. (The side plate could be used as an edge guide, but I never have. Only time I seem to want to cut like that is for window replacement and I have an old junky saw I use for cutting missed nails.)