In general FT isn't a big fan of cross-posting (posting the same thing on multiple post. You may want to edit/remove your original post )

Regarding your post: There are many FT'ers that have status on multiple airlines for multiple reasons, although typically status would be in different alliances.

If you chose to earn EuroBonus Gold (= Star Alliance Gold) then why start over from scratch to earn miles with LU that's in the same alliance?