Yes, its possible. By releasing 1 pin used by the E axis and use TX RX as GPIO, we can now use I2C Oled lcd, and SPI LCD for display. And 1 other pin for IR remote.

IR remote is great because it encode multiple button and need only 1 pin to do that.

For SPI LCD, i ground the CS pin and use simple capacitor and resistor to handle the RESET LCD. So we only need 2 pin SCK and SDA. Except for some LCD we also need CD pin.

Currently i modify the ESP8266 SSD1366 library to be able to work also with 2004LCD, OLED 0.96in, UC1609 chip (192x64 lcd) and Nokia 1202 LCD.

The LCD work together with the remote, so i can select and run job. Change settings (speed, acceleration, etc). Jog, on-off spindle.

Oh 1 more thing, i succesfully able to control the power universal AC motor using this board too. So GCODE M3 Sxxx -> xxx is the power of the AC motor (0-255). Working on real RPM counter too, but this will need 1 input pin.