There are holes to mount the power supply to either exhaust up or down. You cannot change which side the fan faces, however.
There is a D-Frame Mini cut out on the PSU cover, but unfortunately if you have a GPU installed, you won’t be able to see it.
With the power supply installed, you still see cables, and the power supply stickers (depending on sticker locations, and PSU orientation). I would prefer there to be some sort of mesh, or maybe put the D-Frame Logo cut outs on both sides to help hide the PSU a little more.
With a tempered glass side panel, wire management is somewhat required (There’s also only about 1/2″ of cable space). In-Win includes several threaded holes to mount the wire loops they include.
Related to the SSD/Radiator clearance issue; those troublesome Black Ice radiators (GTS240 shown) don’t work in the D-Frame Mini. They’re too wide to allow the fan bracket to screw into place. Again, an offset/stand off for the fan bracket would be nice.
There is plenty of space for mounting a thick radiator. Shown here is an Alphacool UT60 240mm radiator, at 60mm thick.
You can also run push-pull on the UT60 without any height issues. You may be more limited on where the fittings end up, depending on the GPU length. You should be able to fit a Monsta (80mm thick) in Push-Pull, but be mindful of where the cables are on your motherboard, as it will be close.
With a CPU+GPU loop, the UT60 radiator, and an EK X-Res/pump combo, this case makes for a decent little rig. I used one of the drive trays for mounting the pump.
I used 4010 tape to mount the pump. I wouldn’t mind seeing a specialty bracket offered specifically for pump/res mounting, as this is really the only horizontal mounting location.