I can not see the LCD displays in the sun for the life of me.. Having some other display options would be cool, Like either OLED, or ePaper would be great. then i can use the RGB LED module as a status light separate from the display.
With WiFi you can use any smartphone or tablet as a display. Many smart devices are doing away with displays all together and moving to a smartphone as a display.
Several OpenEVSE builders have created their own VFD display.