Rifter #3 Revised Grappling Rules & News Martial Arts
I love the fact that it is recognized as different from grappling while standing.
D20 - Wealth Mechanic - I love the fact that it almost treats handling money like a skill. It covers all the crazy finicial nonsense in one easy to use mechanic.
GURPS 4th Ed- Martial Arts-
I see them as small bonus with more flavor
You know a body of tactics for use when you and your
opponent are both on the ground. In that situation only, you
get +1 in all Regular or Quick Contests to do with grappling
pins, chokes, attempts to break free, etc. If your foe knows
Ground Guard, too, your bonuses cancel out. This perk is
named for a fighting position used when lying face-up, commonly
called the guard, but encompasses many related
positions and also works when crawling or lying face-down
This may work well as a "proficiency"
I also like how they handled "Styles"
As a collection of Skills & techniques
Things I think Crafty Games does well
Representing complex Skill such as Grappling and Martial arts with Feat Chains
Feat chains are by far some of the best implementations of Mechanics.
Submission Basics- with its Prone Stance (Stance) is a fairly good representation of Gurps Ground Guard perk and addressing a ground fighters stance.
What is missing is the great transitional abilities you see in Ninjas & Super Spies
With their Body Flip/Throw mechanic if you are successful with it the character that was thrown loses their next attack so you can immediately move into ground fighting.
Some video examples of this transitionhttp://www.youtube.com/watch?v=BVE82gH-v-g&feature=related
While not looking for wants I would like to see a Trip Feat Chain that is representative of this sort of transition.