A good way to see if your message will land is to say it aloud in public.
If people visibly grimace, you’ll know you are not on to a winner.
Try it out with different political groups and different Commission departments.
Former MEPs and Officials are a good test group.
A good test is is on your friends and family.
If your test audience respond what you say is “incomprehensible” or “you are amonster”, it is good sign you should go back to the drawing board.
A lot of people don’t like doing this exercise. I think it is something that people don’t like being embarrased or riddiculed in private or in public.
The benefits of testing your message out before going live is it is a lot less painful if your message does not land. If it does land, it is great news, and maybe you can incrementally refine it.
There risk of pain and political embarassement is worth it.