Well, to circle back to "Knockdown" crowd, we are heavy on our feet because we have the luxury of not worrying about the head punch. And 90% of the time "Knockdown" guy would run to boxing/muy thay to "improve" head punch. So what ends up happening is that fighter ends up in two different modes: where he is a Muy Thay practitioner with slightly different way of kicking and then in his knockdown mode. I really do not understand why knockdown fighters threw away the traditional long range, explosive lunge punch, what can be more attacking in its DNA than this ? Especially after great example of Machida, "Wonderboy" Thompson, and even McGregor to a certain extent (his hands are still boxing, his footwork is more Karate)
For me, boxing way of punching has incompatible distance, timing, and bio mechanics for Enshin-Sabaki tactic, however classic Karate long punching is just perfect. What needs to be picked up from Boxing is the culture of minimal slipping, head movement and the drills of.
I really hoped that Kyokushinkan's Shinken Shobu would bring that to life - but it appears they defaulted to boxing as well. On the other hand, Kudo fighters are reverting back to this in a way, especially after the generation two headgear got flat on the plexi, and you could not land as much haymakers as before.
The amount of "all-in" type of commitment, explosiveness, precision that this Karate longe punch technique implies for a successful execution makes it a default offensive mindset drill as well.
Just to make sure that I am not on crack, here is a footage from Ashihara Winter Camp in Russia where one of the instructors is ex Shotokan, and he talks/shows precisely the importance of the above.