This is not just for me, by doiing this, everyone will be able to use any serial adapter with an ftdi rs323R chip as a bitbang programmer to download a new bootloader, without buying a programmer.
You can buy a very simple FT232RL based serial interface with a SPI connector, for $2 Shipment included.
pert:
Here's the appropriate repository for Arduino's build of AVRDUDE if you want to submit a pull request or issue report requesting the addition of support for the arduino-ft232r and uncompatino programmers:
GitHub - arduino/avrdude-build-script: avrdude build scripts for Arduino/Genuino