ELF or rather English as a Lingua France or even WORLD ENGLISH or possibly GLOBAL ENGLISH or GLOBISH.
Whatever you call it problems may arise or rather are already arising from what it is and what it means.
For myself, I see the issue from a food lover’s perspective and categorise the possibilities with that in mind.
Possibility 1: The continental breakfast
This is standard European policy of healthy bread, fruit, combined with less healthy jams and pastries with a separate full English breakfast section topped off with fresh fruit juice and tea/coffee with milk.
2: The international buffet
A bit of everything from anywhere and as much as you can eat. Here there’s no emphasis on quality or compatibility so you’ll find carbonara next to goulash and sushi.
At the moment, we seem to still be in our full British breakfast stage which we try to force onto the world but slowly we are having to compromise and have teacher without sugar and salty pancakes. For ELF to really take off it will have to be suitable for everyone and not be culture or country-specific. Will it achieve this by taking a bit of everything or just try to be as neutral and as bland as possible, who knows? But going from my experience of international buffets a plate of 7 different dishes from 7 different countries does not always digest well.