As for waza I think of as likely to present itself, I like atemi, sankyo, kotegaeshi, and juji nage, but when I'm training with the mindset of being "strong against" an attacker I'm usually just cutting (kiri) and thrusting (tsuki) and thinking of "filling" my structure (how to make "everything irimi" when I move)...and slipping/entering (footwork) to the rear. If I can get there, I usually have more time/options.
I like this. It's not how we practice, but I like the conceptual doctrine. There's something to be said for mental constructs. Do you feel it improves your effectiveness?