Haven't had many issues with it. Have had 1 or 2 bluescreens but they're related to the GPU I believe.
Oh crud I thought I changed it! I'll go change it now!
Pick up some velcro straps and work on it. I've got the same case with a non modular PSU and a full size GPU and can cable manage no problem.
Yes it can.
I have the same mobo. https://www.asus.com/us/Motherboards/PRIME-Z270-AR/HelpDesk_Download/ it's under utilities.
If you download ASUS Aura software you can change the LED's on the motherboard to be a static color. If you get an ASUS ROG STRIX card you can sync up the affects for both LEDs to be in sync.
I know this is old but the dust filter will filter everything from the front of the case including the side grill.