Mainline pilots have had unprofessional behavior issues, and I'm sure Delta doesn't want to add this guy to seniority list through a flow so there is another wildcard in the deck. It you don't think that behavior like this is taken into consideration you are greatly mistaken sir. Delta does not want to take on pilots they didn't interview, that's the reason for SSP and DGI. Delta wants to have the last say if someone is on their seniority list, a right of refusal. This right is to weed out pilots they don't think will meet their standards, and while we fly Delta passengers on our aircraft, our aircraft says "Delta Connection" and not just "Delta." Today passengers know the difference between regional airlines and mainline, and they have different expectations. One national news making event shedding poor light on our company will have an effect on how Delta sees our pilot group and if they deem us worthy of a flow. Pilots not understanding this will only strengthen mainline managements belief we are not worthy.