> Besides, I think most of those 97% almost never even need to see "endog" and "exog".

Aren't they literally the first thing you see in statsmodels docs after the function name?  For example [linear regression](http://statsmodels.sourceforge.net/devel/generated/statsmodels.regression.linear_model.OLS.html) or [multinomial logistic regression](http://statsmodels.sourceforge.net/stable/generated/statsmodels.discrete.discrete_model.MNLogit.html), unless most of the 97% are not going to look at docs.