(I am from France, sorry for bad English)
The way it is presented, it seems that chapter will have far more effect on the marine advance than origin had in the two other games (DH and RT). Have we any clues about how "careers" will be managed ? I mean real careers: every chapter have Librarians (except for Black Templar), Apothecaries, Tech-marines which are far more than specializations of the "standard killing machine" that assault, tactical, scout and devastator are.
If chapters are considered has careers, then how these very specific roles will be fit in ? (elite advance, advancement option, branch,...) And if chapters are not careers, then how do they will fit in the career paths ?
Maybe am I asking something to specific on the game mechanics, but I am quite curious on how it will be managed...