Like Sshibal said we are not playing just to be between us, it's just that for something social like linkshell it's easier to play with people that speak the same native language.
Some of us got difficulty to speak english too, and playing with peoples we can't understand could lead to some problems like misunderstanding.
Most of us try to merge a lot with the global community of the server though, you probably know that since we teamed up together a couples of times already ^^
However here's an idea: French got a lack of players in some LS and to continue to run events (leves, sp pt, etc...) we created a pearl for the French community. That could also work for the EU community, player keep their social LS but can also join the EU LS for events.