The black mesh is there as dust filters and doesn't make my temps any higher but keep the CPU cooler fins free of dust. I took out the 200mm fan since I didn't want to fool with its cable every time I take the side panel off. The big fan makes no noise at all BTW.
I like the case except for the bog side grille and I'm going to replace it with a window real soon, transparent blue I think. Here it is with the inner support and grille removes.

Rayda this is the same case I've worked on for 3 months or so.
Geoff the PSU came with sleeved EPS12V and main connector cables. I used black electric tape to try to cover everything else.