Yup there is mesh, just that it doesnt cover the front panel. There is a breathing hole at the bottom
Yeah I saw that mesh, but it has some plastic part with wholes in the back is not a full mesh... mmmm. Are you having high temps issues on the CPU and/or GPU? Is it that why you want to improve the airflow?
Have you tested this while playing gamins using for example something like hwinfo 64 (sensors only option)?
If temps are the issues, then I would start hwinfo, and go play a game for 15 mins, then go back to the desktop and check the "MAX" values for the CPU, GPU and fans.
Then I would remove the front panel all togheter, and test again without it.
You should pay attention not only to the max temp of the CPU and GPU, but also to the max RPM of those front fans.
I had a problem with my case when I first build my new rig in that the front fans would not spin at the full RPM not matter what i did, and I found out it was because they were been choked by the front panel. I removed the front panel and the CPU temp went down and the front fans finally spinned at the max rpm. (I then fixed the issue moving the fans away fonr the font panel).