Bit of a mixed historical metaphor since Germans didn't breakthrough Maginot Line (Ger agreed it worked!) and there's no Ardennes equiv the Kor peninsula. Consensuses have been wrong but noone sees risk of NK invasion. Isn't their posture, isn't their capability. They aren't even building it yet.
And this in turn informs SK resp.; SK mil unafraid of NK correlation at present, even with NK units at 100%. Improvements in skill are hard-bounded -- Ukr War example is bit less than 2:1. SK maintains v.large field forces, full range of capabilities, massive reserve system and hardened border.
Different situation, different government, what could be done to limit the acquisition and dissemination of modern methods to NK mil? 1. Direct intervention in Ukraine, on Kursk front, to kill NK. Likely ineffective, likely will give them the experience. Backfire.
2. Attacking NK forces in NK. Better suited, SK mil has limited expeditionary reach but much ability to push forces to DMZ + weapons to reach deeper, sea-based assets, advantage in air. Still would not likely do much to dent the lessons learned while also being a shooting war with NK.
3. Lethal aid to Ukraine itself. Effectively policy as of now (might change v. shortly w/ new govt), with SK "backfills" allowing other nations to distribute lethal to Ukraine. Problem being Ukr mil has little incentive to exclusively tgt NK forces on an inactive front.