Umbran, thank you for your thoughtful assessment. Here are some "counter" thoughts.
First, I think a lot of people like the way combat plays around third level. Second, I think the game takes a lot of less direct routes to achieve this basic goal anyway. Look at how monster and spell damages escalate with level and how Fighters get multiple attacks, largely to maintain damage-vs-hp ratios. Third, I personally like the elegance of Nth-vs-Nth-level combat remaining more or less constant, all while allowing higher-level Fighters to mow down lower-level Fighters (even if those lower-level Fighters aren't one-hit-die Warriors).
If AC and Damage rose along with BAB and HP, as you rose in levels, then a fight between two high-level Fighters would resemble a fight between two lower-level Fighters, but I definitely would not say that there is then "no point in increasing them".Umbran said:If AC and Damage rose along with BAB and HP, as you rose in levels, you'd not see any change in combat. All fights would be like you were first level. If there's no difference in their rate of increase, there's no point in increasing them, really.
First, I think a lot of people like the way combat plays around third level. Second, I think the game takes a lot of less direct routes to achieve this basic goal anyway. Look at how monster and spell damages escalate with level and how Fighters get multiple attacks, largely to maintain damage-vs-hp ratios. Third, I personally like the elegance of Nth-vs-Nth-level combat remaining more or less constant, all while allowing higher-level Fighters to mow down lower-level Fighters (even if those lower-level Fighters aren't one-hit-die Warriors).
I can see why we wouldn't want a system where 10th-level Fighters typically died in a single attack, but I don't agree that a system of more hits and less relative damage per hit is more epic. I think there's a golden mean around three or four hits to disable someone, so it's not an abstract game of whittling down numbers.AC doesn't rise with BAB, so as you rise in level, you hit more frequently. But, since damage doesn't really rise with HP, those hits do proportionately less. The end result is the image of more epic action. You hit more often, so it looks like something is going on, but you need to hit more times in order to finish the fight.
This is probably a good thing. It lengthens the fight, and allows more time to take advantage of the greater number of tactical and dramatic options available, giving high-powered fights more variability of action than low-powered ones.