It makes sense but DAL does not like the 318 at all.

Also if DAL wants early positions on the C-Series, all they have to do is place an order. RJET is in trouble and unless they are bailed out, those orders will be available. I of course would like DAL to acquire parts of RJET, namely, all of the F9 airbus flying and those pilots as well as all of the MEH pilots.