SPCR

Fractal Design Define R series have been one of the favorites and most used among SPCR users that like to build on ATX factor, since they just released the latest's iteration (7), in case someone is interested here some reviews,

Official Manufacturers webpage

SITES REVIEWS
Guru3d Fractal Design Define 7 XL review
TweakTown Fractal Design Define 7 Mid-Tower Chassis Review
TechPowerUp Fractal Define 7 Review
GamersNexus Fractal Define 7 Case Review: High Build Quality & Thermal Challenges
KitGuru Fractal Design Define 7 / XL Review
Toms Hardware Fractal Design Define 7 Chassis Review: Versatility and Refinement
HEXUS Review: Fractal Design Define 7
OC3D Fractal Define 7/Define 7 XL Review
Legit Reviews Fractal Design Define 7 XL Case Review

VIDEOS REVIEWS
Fractal Design Define 7 Showreel
Gamers Nexus Fractal Define 7 Case Review: Excellent Build Quality, Thermal Challenges
HardwareCanucks Have We Reached Peak Case? Fractal Define 7 Review
KitGuruTech Fractal Design Define 7 / XL Review - DAMN thats CLEVER !
Level1Techs Checking Out The Fractal Define 7 and Define 7 XL
Optimum Tech Fractal Define 7 - Who Need's a Case This Huge?
OC3D TV Fractal Define 7 including XL Review

Edit: adding more reviews, removing my mistake of still calling it R.

Can you remove the PSU shroud? It doesn't seem like it has a functional purpose.

Don't know if it can be removed.

The shroud serves two useful purposes:
- PSU intakes air from the case bottom and expels it out the back. So, PSU waste heat isn't added to the case ambient to affect CPU/GPU/case fan profiles.
- Case ambient doesn't affect PSU fan profile.
Net effect is generally a cooler running PC/quieter fan profiles.

the shroud is fairly perforated, and runs a little over half the length of the interior compartment. the case supports 3x120 or 3x140 front fans, with the bottom most fan's lower half being at-or-below shroud level. so there's a bit of overhang where (relatively cool) front intake can get 'trapped' in the basement when using all the front fan slots. I'm not sure I see how a shroud prevents a bottom-facing PSU dumping air into the case since its exhaust side sits flush with the back of the case anyway. the ambient temperature point intrigues me, and from my temperature probe I know that back corner is one of the toastiest regions of my r6. I've never checked what it's like in the basement, though.