There were many lingua francas of which French was supposedly the first global lingua franca. That changed and it became English (from what I understand). We will probably see another language become the lingua franca, so my question is: should it be English? Are there better candidates out there? Why / why not?
This suggestion is at least original :p
But I think we should make our new lingua franca a generous gesture to the world: we should find some language only still spoken by one old woman in some remote village, give her a list of words to translate and have that be the basis for our new federal European conlingua franca!