For the MacPro1,1-5,1 it probably won't work because the area using this kind of mesh would be too large and it wouldn't provide enough strength.
I think the upcoming MacPro7,1 will have great airflow because of how large the openings are.
I'm using a
Silverstone Tj-08E. Airflow is fantastic with this case. I replaced the stock fan with a 180mm PWM fan (stock is not PWM). I have a 2x 2.5" drive hot swap cage at the bottom and 3x 3.5" hot swap cage on top. Internally, I use a Noctua NH-D15S heatsink with dual fans.