Adopting training drills into practice

[Ames]

While reading this thread:
http://www.e-budo.com/forum/showthre...4&page=2&pp=15

I got to thinking about my own training, and how my Sensei does, occasionally incorporate training drills he has devised into his teaching. When we do these drills, he makes it very clear that they were not taught to him in Japan. Rather, this are methods he has found to further train the attributes studied in Daito Ryu. This is not a muscular sparring, but what I might call 'flow drills'. They simply teach how to maintain posture, a calm mind, relaxed body while dealing with attacks in a 'free style' setting (a knife to the belly or throat, a fake right hook, which becomes a front kick to the groin, things like that.)

Now there is no altering of the waza whatsoever. I think of this more as 'free style henka' rather than randori, if that makes sense. So I guess the question I have is: If one includes new drills into the training, which stick to the same biomechanics and principles studied in the waza, does this dilute the art. Or does this fill a gap created by not using the art in a street setting?


Just thinking outloud and wondering how others feel.