You can try the chrome extension created by Robin Card from these forums:

https://chrome.google.com/webstore/detail/duolingo-simplified-to-tr/clnnjdojceobnkhkocigpboialomopfk?utm_source=chrome-ntp-icon

i think i'd be relatively easy to implement traditional characters. it might be very time consuming for the people to go back and rewrite everything in traditional. but theres probably a program that takes simplified words to traditional so im not really sure