I’ve come to the conclusion that I can’t really improve upon the standard 3.X d20 base attack bonuses. Unfortunately, with my plan to expand my d20-type game to 30 levels, it creates a bit of a problem.
Currently, with the 20-level system, the base attack bonuses peak at great places. +20, +15, and +10. This gives warrior types 4 attacks, clerics and rogues 3 attacks, and wizards only 2 attacks per round, but maximizes their attack bonus for their final attack without overloading them with attacks per round. It’s clean and efficient.
With my 30-level plan, this creates a problem because if I just follow the current patterns, the attack bonuses will become overpoweringly high and would allow for far too many attacks per round. It is simply out of the question to give warriors a +30 base attack bonus and 6 attacks per round. Not to mention that the rogue/cleric base attack bonus would end on a weird number (+22). It simply isn’t an option.
So, I need to stick with the +20/+15/+10 maximums. Now the question is how do I stretch it out over 30 levels? I have tried expanding them, slowing the progression rate so that they all hit their maximums at level 30. At first, they worked well. But, when looking at them from a multi-class point of view, they don’t hold up. The math simply doesn’t work out properly in some cases. I will keep trying this method, but so far it’s not looking good.
I was really hoping that I would be able to use the stretched out method, too. I want to have the attack bonus gained from the weapon training system count toward gaining additional attacks per round, making the training even more valuable. So far, though, it isn’t working out.
At this point, I am left with leaving the base attack bonuses as they are and having them peak when a character reaches 20th level. This would mean that once a character reaches 20th level, their base attack bonus does not improve any further. Sadly, this leaves 10 levels of no further combat improvement other than feats and weapon training. It also prevents me from using the attack bonus gained through weapon training toward attacks per round because it would cause it to be very front loaded and still not provide much of a benefit beyond 20th level (well, new benefits).
So, I’m still looking at them and trying to work the math to find a happy medium. As always, I am open to suggestions and/or input from those few that take the time to read my sporadic posts.