The reader should calibrate dot and dash lengths during the attention A's at the start of the message and the sender should keep to those. An AVR can poll the line digitally over 50 times a millisecond, we detect bounce.. morse code is not a big deal.
Do I want to enter a contest where all entries become property of someone else for chicken feed? I don't think so, at least when I give code away I can't be stopped from using it!