For that I had to move and rewire some stuff, the I2C grove connector now sits on the other side. The SD card found it's place close to the LCD connections and I was able to use the last pin of the ESP for CS of the SD card. Some labels had to be moved as well. The extra C button is more of a troubleshoot / bootloader thing for Gamebuino, but I've added it as some kind of shoulder button anyways. I thought it would make sense to have that SD card and button for supporting the gamebuino games. They won't work with pre-compiled hex files over SD card, since they are compiled for atmega328 chips, but some of them should be easy to install with the Arduino IDE.

I'm not sure why, but at some point I've decided to place the display upside down :D Since they're using adafruit libraries I'll still be able to rotate the display. Nice.

Nice. Last input on the PCF8574 is connected to the SD card connect detection switch pin. Totally overlooked that before. Pretty cool to actually wait and further design the board, instead of rushing orders.