HERO System (5th ed.)
Franklin's House Rules for Martial Arts
All original work herein is copyright © by Franklin W. Cain. All rights reserved. (Last updated: 31 December 2006)
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I have listed all of the standard
maneuvers in separate documents:
 
General Info

All skill packages for (formal, "official") martial arts require the appropriate style familiarity. (This is my campaign's equivalent of the usual "KS: [Style]" skill.)

Minimums Required

I insist on a minimum of three maneuvers (as well as a minimum of ten points in maneuvers) for anyone buying a martial arts package. For a character wanting multiple martial arts packages, he must meet the following requirements, which are calculated separately for the two types of martial arts (hand-to-hand/melee; ranged):

Thus, a character with four HTH/melee martial arts packages must have a minimum of six HTH/melee maneuvers totalling at least 25 points. If that same character wanted to also have two ranged martial arts packages, he'd also need a minimum of four ranged maneuvers totalling at least 15 points. Furthermore, he'll need the appropriate style familiarities for all six styles.

He'll also need any Weapons Elements required, which are tracked separately for HTH/melee and ranged.

Example:
Knife-fighting would require the Blades element for the melee maneuvers and again for the ranged maneuvers. However, this won't be a problem if knife-fighting is his only martial art, as the first Weapons Element for each category (HTH/Melee and Ranged) is free.

Elements

Weapons, Styles, and Special Conditions ("Use Art With/While...")

Here are the "Use Art With/While" Elements that I permit, for covering various weapons, styles, and special conditions. Each such Element costs one point (1 CP).

Note that you may not buy any two-point WFs. You must buy each individual one-point WF separately.

Extra Damage Classes

I also permit this non-weapon Element to be bought. However, you may buy a number of Extra Damage Classes only to a limited amount (i.e.: not to exceed whatever Damage Cap I've placed on the campaign). Furthermore, if bought for a Ranged Martial Art, it must be for thrown weapons (i.e.: not for bows, crossbows, firearms, or energy weapons).

Building Maneuvers

I've made changes to the list of elements for building maneuvers for ranged martial arts. For the sake of consistency, I'm listing all of the elements for both hand-to-hand as well as ranged martial arts.

HTH/Melee: Helpful Elements
 
Element      Description      Maximum
Abort   +1 point if you can abort to maneuver   Take once
Affect Weapon   +1 point if hit Binds enemy's weapon;
+2 points if hit Disarms enemy's weapon;
+3 points if hit Grabs enemy's weapon 		  Grab Weapon
Block   +0 points if maneuver is based on Block
    (includes Abort element) 		  Take once
Damage +   +1 point per +1 DC, up to +2 DC;
+2 points per additional +1 DC 		  +4 DC
DCV +   +1 point per +1 DCV, up to +2 DCV;
+2 points per additional +1 DCV 		  +3 DCV
Disable   +0 points if maneuver intended to Disable opponent's limbs   Take once
Dodge   +0 points if maneuver is based on Dodge
    (includes Abort element) 		  Take once
Flash   +1 point per +1d6 Flash, up to +2d6;
+2 points per additional +1d6 Flash;
+1 point per additional Sense Group 		  4d6 Flash
FMove   +3 points if can attack after Full Move   Take once
Grab Opponent   +3 points if hit Grabs two of opponent's limbs;
+1 point per additional limb 		  Grab Five Limbs
K-Damage   +3 points per +1 DC Killing   4 DC K
NND Dmg.   +1 point per +½d6 NND, up to +1d6 NND;
+2 points per additional +½d6 NND 		  2d6 NND
OCV +   +1 point per +1 OCV, up to +2 OCV   +2 OCV
STR +   +1 point per +5 STR, up to +10 STR;
+2 points per additional +5 STR 		  +20 STR
Strike   +0 points if maneuver is based on Strike   Take once
Throw   +1 point to throw opponent to ground   Take once
Velocity   +1 point to do Velocity/5 extra damage;
+3 points to do Velocity/3 extra damage 		  +v/3

HTH/Melee: Restrictive Elements
 
Element      Description      Maximum
DCV -   -1 point per -1 DCV   -2 DCV
Fall   -1 point if you fall   Take once
Follow   -2 points if maneuver must follow some other specific (successful) maneuver   Take once
Half-Move Required   -1 point if maneuver requires character to make a Half-Move   Take once
Lasting Restriction   -1 point if maneuver's penalties last for an extra Phase   Take once
OCV -   -1 point per -1 OCV   -2 OCV
One Limb   -1 point if Grab affects only one limb   Take once
Response   -3 points if maneuver can be used only after specific maneuver by opponent   Take once
STR -   -1 point if maneuver uses half of character's STR;
-2 points if maneuver uses none of character's STR 		  No STR
Takes Damage   -1 point if you also suffer half of maneuver's damage;
-2 points if you also suffer all of maneuver's damage 		  Takes Full Damage
Time +   -1 point if attack takes an extra Segment to perform
    (landing at the end of the next Segment) 		  Take once
Unbalancing   -1 point if opponent gets to attack first in next Phase   Take once

Ranged: Helpful Elements
 
Element      Description      Maximum
Damage +   +1 point per +1 DC, up to +2 DC;
+2 points per additional +1 DC 		  +4 DC
DCV +   +2 points per +1 DCV   +2 DCV
Disarm   +2 points if maneuver is based on Disarm   *
    (+0 OCV; +0 DCV; base STR of Disarm equals Weapon's DC) 		  Take once
FMove   +3 points if can attack after Full Move   *   Take once
OCV +   +2 points per +1 OCV   +2 OCV
Rng. +   +1 point per +1 OCV vs. Range, up to +4;
+2 points per additional +1 OCV vs. Range 		  +6 OCV vs. Range
STR +   +1 point per +5 STR, up to +10 STR;
+2 points per additional +5 STR 		  +20 STR
Strike   +0 points if maneuver is based on Strike
    (+0 OCV; +0 DCV; does Weapon's DC) 		  Take once
Throw   +2 points to throw opponent to ground   Take once
v/5   +2 points to do Velocity/5 extra damage   Take once

* -- This is unique to my campaign (i.e.: this is not standard).

Ranged: Restrictive Elements
 
Element      Description      Maximum
DCV -   -1 point per -1 DCV   -2 DCV
Half-Move Required   -1 point if maneuver requires character to make a Half-Move   Take once
OCV -   -1 point per -1 OCV   -2 OCV
Rng. -   -1 point per -1 OCV vs. Range   -2 OCV vs. Range
Time +   -1 point if attack takes an extra Segment to perform
    (landing at the end of the next Segment) 		  Take once

https://fcain.tripod.com/h5skills/martial_arts.html
All original work herein is copyright © by Franklin W. Cain. All rights reserved. (Last updated: 31 December 2006)