Just finished printing the redesigned face plate in PLA. The RGB LED is replaced with a 12x neopixel ring around the PIR sensor, while the IR LEDs will now go around the RGB sensor (the idea is that the lights go closest to the sensor they cause the least interference to).
The test plate came out ok, but the sonar and camera holes need a little adjustment to fit. I might trim up the lower corners too and reduce the width a bit to save on space. The total size of the plate currently is 140 x 70 x 3 mm.