Well, if you look at the preview, they recycle the whole Kira scenes with SF vs Destiny and Legend. Shinn and Athuran shooting each other (originally SF and Destiny) and SF and Legend face to face in a dramatic pose (also from episode 43 I believe). The whole fight scenes will be reused, even from SEED. That's the first thing i'm gonna do, rewatch SEED's last battle and compare it to Destiny's. I expect a 80% exact comparison rate in terms of fight scenes.