I do see a good level of creativity in this project with indication and a throwback type look with LED display integration something important to note. At one time there was PS2 keyboard enumeration support with basic the amount of space that consumed was fairly large though so it was cut out in version 1 it is still available on github though you will lose a lot of other functions if you were to downgrade.
Thanks for the update and thanks for sharing way cool!
Where I buy my ESP8266 boards from... (Banggood)