Hmm...for more offense strats, I'd say use aga more XD
But yeah, at least the way I play NM, I just space with (i)aga a bunch. In general, I think you should side/back step more too. Back step as opposed to just holding 4. The B+K retreat is really good too. Especially after things like 4KK blocked (it's a good thing your opponents weren't ducking the second hit).
Those are just the general notes. Other random notes, you should try ducking the second hit of Hilde's 3BA (she can do 3BB instead, but it's usually slow enough to react to); practice punishing Siegfried's 3B with 6K too (you were doing it for a while so maybe it's just a matter of working on your reaction time).