Trainz said:
Stats from 3-18 used to have a meaning in D&D (you would do a Str check on a d20 for example, and had to roll under your Str).
The old system was flawed. "Make a strength check". Great. I must roll anything below 19 with my powerful fighter, no matter wheter I want to lift a bigger pebble or a castle. Besides, the finite system wasn't helping, either.
With the new stat system, they serve absolutely no purpose.
They do:
They serve as basis to calculate the modifier
They serve as prerequisites for Feats (Power Attack? Need Str 13)
They serve as prerequisite for Spellcasting (Want to cast level 7 spells. you need Int 17)
They serve as base for calculating carrying capacity.
You have a 4 in Str ? That's +4 to hit and damage (+6 dmg with two handed weapons).
You have a -4 in Str? Shouldn't that mean that you are weaker than helpless? You're so weak that others around you have to drop things? No, I wouldn't like to have a negative stat. Beside the fact that it wouldn't look D&D, there's also the thing that we had to put an arbitrary barrier in place: How far below 0 can it go? How much death poison can you absorb before you die from it? Con -287 isn't in, is it? I mean, we can have con below 0, so how far does it get?
Then there's the thing with increases. Every 4 levels, you can increase one of your ability scores. Not your modifier.
Next problem: Generation. How do you roll for a score that has a starting range of, say, -4 to +4? Keep in mind that we have a bell curve here, you cannot just roll a d10 and subtract 5 or something. And point buy would have to be overhauled, too.
What about ability damage or drain? At the moment, you can be drained or damaged for a single point (some effects even do a single point, not somethign like d4 which can come up with a 1, or 3...). This means that you only get a palpable penalty every other hit. So the new system either makes stuff like weak poisons or wounding weapons twice as lethal as before, or we introduce half-scores. "I've been poisoned, I now have Str +4.5" I don't want to go there.
I hate it when I have to check a monster's Str (34 or somesuch) and calculate how much of a bonus it actually means.
+12. It's so easy. After 4 years or so of playing d20 I have no problems whatsoever of deriving the modifier. Not that I had some 4 weeks after my first session.
3-18 stats are an artefact of the old days that needs to go.
It stays, unless you have a better solution. Negative Scores is not a solution.