QUOTE (ludomastro @ Oct 11 2017, 07:41 PM)

Fair point. Having it work like HP might make things easier...
It doesn't look super hard to convert, but let your players know you're testing out the house-rule and reserve the right to tweak things up and down as the game progresses: so there's no point in them building a character specialising in blow-darts based on them doing insane damage one session, because they'll be rebalanced.
The 3rd Edition "HP" (ie Wound boxes) are:
- 1 box = Light (-1 Initiative and +1 Target Numbers) (SR3.125, SR3.126)
- 3 boxes = Moderate (-2 Initiative and +2 Target Numbers) (SR3.125, SR3.126)
- 6 boxes = Serious (-3 Initiative and +3 Target Numbers) (SR3.125, SR3.126)
- 10 boxes = Deadly (-4 Initiative and +4 Target Numbers) (M&M.132)
- 15 boxes = Light Naval (you get the pattern) (R3.57)
- 21 boxes = Moderate Naval (...) (R3.57)
- 28 boxes = Serious Naval (...) (R3.57)
- 36 boxes = Deadly Naval (...) (R3.57)
You can go through all the Weapons in your game and round their damage up or down to the nearest wound level as above. Whether to round up or down depends on just how effective you think that weapon seems in comparison to others that deal that wound level or the wound levels immediately above and below it.
Then when someone is hit by a weapon, vehicle, spell, drain, IC, or whatever, inflict the appropriate number of boxes on their damage track, based on that item's wound level. Then compare how many boxes (in total) they've taken relative to the wound levels above (someone who has taken five Light wounds (5 boxes) has a Moderate wound, but inflict one more Light wound and they have a Serious wound). Initiative reduced to zero means the character cannot act (SR3.102). You can play about with converting "add
x to TNs" into "subtract
x from dice rolled", "add
x to Edge costs", or whatever works out for the effect you're looking for.
I agree that 4th is easier to teach. The maths in 3rd Edition boil down to:
- add a number
- subtract a number
- divide by two
I'm not convinced that such maths would challenge many roleplayers who've finished primary school.