Although I understand your concern; it's always easier to communicate in our motherlanguage... but
I don't support your idea for different forums! We have one NT, one U21, one country... we should stand all together to support our team, and we should talk and take descissions concerning them together.If we want to reach results, we should all stick together. Imo this requires the courtesy to use a language that everyone understands. Our community is already very small; no need to tear it to smaller pieces.
and...I'm sure the errors we'll make in english will be forgiven.
However, when it comes to the communication between scout and manager, I can understand if you prefere to designate a frenchspeaking scout to a frenchspeaking manager and a flemish one to a flemish one... as communication and explanation in this case (igm) should be good understood and clear and this is easier in your own motherlanguage.
For your info; there is a flemish help forum, which is barely used.... look at the date of the last post there!
just wanted to give my point of view...