Hello Medulant:

I would agree with others who contend the art called Karate is not "ignorant". Some methods (most perhaps?) are designed for standing attacks/standing grappling... However, on the ground the art has beautiful, very functional technique both primary and as a secondary by product.

Being a martial art, we can study the "new" attacks and explore how to respond via kata principles & parody. No outside material necessary.

Merely my opinion, I could surely be mistaken,

P.S. [If I cannot do that work, then see how another art copes see if their idea(s) exist in ours once their fresh vantage is engrained. ~... hummngh do we have that idea...~]