I'm speaking to the principles, not commenting on Lance or anybody else here.
a slightly more aggressive style in countering.
As a rank beginner, I've found this to be true. Aggressive indes/nach countering is hard but much safer in my limited experience. It's hard because it relies on timing, which takes a lot of effort and practice to learn.
For example, when somebody faster strikes Zornhau and I'm on the defensive -- I've found that sidestepping with aggressive counter-striking (e.g break his Zorn with another Zornau) allows me to not just defend, but to retake initiative, e.g. follow up immediately with an unterhau to the head, round through to use a plunging cut, pommel strike, etc.
That's what I'm finding fascinating in Ringeck. It's aparently in the other manuals, but I'm most familair with Ringeck.
I've learned to appreciate the masters' commentary that the best defense is a good offense, so to speak. I don't think that they mean to always attack first, but when defending to actively take the initiative, which
cannot be done through defensive action.
Lastly, I've seen many references against standing statically waiting to attack or defend. I'm still trying to understand moving through guards, but it can confuse and reduces an opponent's chance to meisterhau your static guard. I believe I also saw this in the videos from the IG last year.
Anyhow, random rattling from my head. YMMV.