There are various reasons you don't want to hear about on why I came up with this post. While it's about very small changes, I know how we nerds pay great attention to details when it comes to games we love so I posted it anyways.
• First, just like it was in D&D before the third edition, a score of 12 has a modifier of +0, not +1 as in DW. I never understood the goal of this small departure from the original rules!
• Then, the starting scores are a bit different: instead of a 17 you have a 16 and instead of an 11 you have a 12. Now this does not change the modifiers on those stats and it's better suited for the next tweak.
• Finally, instead of increasing a score by 2 points on levels 3, 6 and 9, you just increase one score by 1 point every even level.
I will not report the actual math, but those rules make less painful to spread your attention on more stats than just maximizing the highest two, while focusing on those two produces the same result as the current rules; and saying "every even level raise a stat score by 1" is a bit simpler than "on level 3, 6 and 9 raise a stat score by 2". It also eliminates the issue of "what when I raise a score of 17 by 2 points?".
I hope someone here will find those tweaks helpful. See you!