Technical Part (Danger if you hate math skip this post!
)
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RPGW1ZaRD 
from technical view, PadWinKeb was Wrapping every 254 pixels to 0
it means, if your screen width was 640, and your mouse x-axis was 200, and you
go to the right 60 pixels, that means the new analog x-axis is 6 ( 260 - 254 )
it'll go to the left, so that's why the Character in FF12 goes in wrong different directions, in
different mouse locations.
I managed to correct this by this formula to scale Mouse (Screen) coordinates
i.e (640x480) to Analog coordinates (x and y <= 255 and >= 0) (255x255)
AnalogX = (Mouse.X / ScreenWidth) * 255
AnalogY = (Mouse.Y / ScreenHeight) * 255
I don't know why PadWinKeyb authors didn't do that, it was very trivial & basic.
the Reks in FF12, if you want him to run the right, Analog must be X > 64+(128 origin)
So bottom line, Sensitivity is good for Most games, cause Keyboard uses
the highest sensitivity, so mouse will be good for accurate Analog coords
And I don't think, it would be appropriate to add harsh mouse sensitivity
(although its possible)
Besides, you said, it's a bonus feature, this plugin focus on Keyboard.
Sorry if I was bragging, But I was showing you what's going on.
I hope
thc is glad for mouse support tho