Hi Brian,
we don't have plans to support modules in the short or long term in the Mobile app.
Moodle itself is trying to get rid off modules (see the new boost theme) when possible.
There is a issue in the tracker created for adding WS to support blocks, see https://tracker.moodle.org/browse/MDL-50970, the problem right now is that it will require some core changes because of the text formatting
Regards, Juan