Nice, I have a pretty similar setup but don't have the reservoir, what are you using for that? My issue is that the CNC uses a drill bit so i get much bigger chunks/dust than the ultra fine particulate i get with the laser/3d printer
To your point, the laser doesn't produce particles that are the same size a brill bit would (larger pieces sit pretty on the bed until they are lifted away) but I reckon it might still help!
Just spitballing, but would a setup that swaps the dryer-vent-fan for suction on par with a Shop Vac be able to move those larger chunks? (add water to the Shop Vac's belly before using it as extra filtering)