[Martial Arts] Technique to offset -4 for grappled

[JoelSammallahti]

I was looking through Martial Arts to see if there's a technique for reducing or eliminating the -4 penalty for being grappled. (I'm writing up a vampire hunting martial arts style for my blog.) There isn't. So, I was thinking of designing one, and I figured I'd make it work exactly like Ground Fighting, including the defense penalty reduction.

However, I started wondering whether maybe there's a reason such a technique doesn't appear in the book - it would, I think, logically be a part of most styles that teach grappling skills. So, is this perhaps too powerful a technique? I would think that it's about as valuable as Ground Fighting, being that fighters fall down not only from Judo throws, sweeps and takedowns, but also from failed DX rolls after kicking or suffering knockback, and failed knockdown rolls.

Of course, there's also the argument that such a technique is unrealistic, but even if completely eliminating the -4 is too much, I would think reducing it to -2 or -1 should be ok.

Any advice? Has there been discussion of such a technique before?