Use the slots to velcro wrap a Mobius, Runcam2 or similar size camera. might need a little velcro on top of the pico to prevent the filming camera from sliding out. I have yet to try this though.
FPV camera angle can be adjusted by adding some foam tape under as desired. 26 to 45 degree angle should be possible.
There are also modeled in air vents to cool the vtx if its mounted under.
This version has some thicker bottom plate and side plate areas, as well as increased possible adjustible angle to 45 degree. See video for more details.
camera: http://www.surveilzone.com/DC5-24V-Super-Mini-520TVL-CMOS-Camera-Low-0008lux-FPV-g-1473
This fits the hole pattern of a naze32 size board.