Without actually experimenting with different things, It's really hard to say what actually would improve it over the original. The screen wire could probably be good if you had enough of it in there strategically placed. I think it would sort of act as a filter, slowing down the cool air so the air would build heat from the heat mass. But I don't know how well the air would flow being pushed through something. I am kind of feeling like pulling the air would be my first thing to try as long as the temp didn't stay above 120f or so with the blower I have. If you are pulling the air, it has to be pulled from the cold air intake and will try to get to the outlet in the most direct way, so diverting some would spread the flow. Pushing it, I feel like it does work with no obstructions, but adding something to slow the air would probably end up causing the frame of the unit to gather heat and some dissipate out before making it into the house. I really don't know, but it's fun to think about.