Since there are now game rules, the mod is already pretty cusomizable.
And if someone does not want to use something, they can simply disable it themselves or make a submod.
Speaking of which: If you want to give an option to disable something specific that isn't already affected by a game rule, why don't you make a submod instead?
We already have an official no India, and I think there used to be a "reduced traderoutes" one - you could just make a similar one, and I think the devs wouldn't mind.
But re-distributing the mod in pieces might not only make you look like the author (which you might not intend, i know), but also generate problems when people come back here for support, and use a totally different mod setup that might experience problems that the combined mod does not.