This is an incredible amount of work, I know Bootstrap well enough (plus I use a 24 col grid with 16px margins for everything) that it wouldn't be much use to me.
Can't you modify the number of grid columns in Bootstrap? I use Foundation 5, and there is an option within settings.scss which allows you to change the default 12 column grid, eg:
I think (maybe) you misunderstood, I do use Bootstrap with a 24 column grid as I compile it myself with less (I also change a bunch of other stuff to improve table appearance etc).