"The DA has a little more than 30 percent of the combined total of GNU MPs. A DA coalition with the FF+ and IFP would amount to about 43 percent, enough to block the “sufficient consensus” in favour of the ANC bloc. "
This seems to be the critical pragmatic decision point for staying in the GNU to avoid the ANC having to team up with either the EFF or MK ... ?
Block the bad stuff, allow the good stuff ... ? Not great but real world ...
-- " It is not the water in the fields that brings true development, rather, it is water in the eyes, or compassion for fellow beings, that brings about real development. "
—Anna Hazare