My family tree is about 4000 peoples , from about 6 countries. My problem is this:
I'm from Czech republic, my 3rd cousin is from Germany, what happend if I invite him via HOME / INVITE FAMILY. There I find my 3rd cousin from Germany, I send him a invite message, but in which language it will be? That i dont know.
It will be in german or in czech? It is very important, if it will be in czech , he will be not understand it.
So maybe it is time to put some icon or plain text to select language of invite message.
I have the same problem. I've sent an invitation to a person in the USA but the invitation was in Finnish and he couldn't understand it. There's also a possibility to choose the language on the site, but it doens't work. Your idea of choosing the invitation language is good and after getting the invitation a person could go to the site and choose the site language.