Re: A new take on "Deadly Blow"
I've adopted a few house rules to balance out deadly blow by limiting the number of times it can be taken based on what type it is (7, 5, 3 pt variety - I don't allow the all inclusive 10pt) coupled with total character points.
example 7 pt
1 1d6 deadly blow for 100pts
2 1d6 deadly blow for 150pts
3 1d6 deadly blow for 175pts then 1 more for each 25 pts
example 5 pt
1 1d6 deadly blow for 75 pts
2 1d6 deadly blow for 125 pts
3 1d6 deadly blow for 150 pts then 1 more for each 25 pts
The 7 pt variety can only be taken once for each type of attack it is used with.
The 5 pt variety can be taken twice for each type attack (Thieves back stab with a DEX roll can be bought upto 2d6 + 1d6 for a dagger (figuring 5 pts over str min) thats a 3d6k strike with a dagger in a low level fantasy game (1/2 DCV from behind and 1/2 Hit locations if out of combat and surprised means a pretty easy called shot for the head, neck or vitals).
Then that puts the 3pt variety at being able to take it three times for each type of attack. This being a very limited circumstance to use plus a DEX roll means it shouldn't unbalace game play since its use will be rare and have a chance to fail.
I like running low fantasy games (which to me is a 30/30 or 25/25 starting character and between 1 to 3 XP per normal weekly session). Although the Aid version is an effective way of raising the cost to bring it inline with the damage it makes it to costly for my PCs to purchase. In High Fantasy campaigns 150 to 250 point characters I would adopt that version.
I'm also considering adopting a rule to "not" allow it to be used in conjuction with a martial arts. I am seeing a trend to buy one martial art maneauver that has a good OCV/DCV bonus with some DC bonus then adding in the deadly blow. Add in a big weapon like a Great Axe and the players will only use that one maneauver and nothing else, where before deadly blow they often jocked between maneauvers to get the OCV/DCV bonuses when they needed them or the higher DC when they needed it. I think this would put the benifit of MA back in play.