I think it would be good to have a German tengaged. German is spoken by 100 million + people throughout Europe, North America, South America, Africa and Parts of Asia.
For people in the EU it is the offical second language behind English and seeing as we alredy have an English Tengaged a German one would seem viable.
It is the third most taught EU Language in the English speaking world after French and English.
Also it could help people learning German first hand in school or at home. I learn Spanish in school an the tengaged.es is great, its really helpfull.
Now onto the tengaged.fr
French along with English is the only language to be spoken as a first language on all seven continents. An estimated 250 million people around the world speak French on a daily basis. Also anyone learning French could benefit from the tengaged.fr.
It spreads culture and helps people to understand differernt cultures and other languages. I think it's definatley worthwhile.
Thanks for reading :]