Alright folks, first attempt ever to embed images in a forum post, here goes...
Clarification for first image: Red is current, Yellow is proposed. Alternatively, jagged is current, smoother is proposed.
Before decrying the significant increase in base attack at 99 strength, please understand that the people who have studied this issue and have about that much strength are already either at 90 or 100. This doesn't affect them hugely, aside from not wanting to reset their stats every time they switch equipment affecting their primary attribute, and possibly going to that extra few stat points over 100, which costs them a lot of both secondary stats and GP (eg 1m for a new ring).
If that failed, try this link:
http://imgur.com/a/0q7SX
So yeah, there's (1) a visual comparison of the curve currently in use next to the one I'm proposing, and (2) a graph of the percent change in base attack power based on strength from the current curve to the proposed one.
Or at least, there should be, if imgur works.
Sorry if graphs seem low quality, but they're just intended as a temporary way for people to grasp the issue visually. If this gets approved we can make a pretty graph for posterity if anyone happens to care, but hopefully it will be intuitive enough that that's not necessary.