There's already been a precedent for that and the authority seemed at the time, and the use of the words is judicious, quite happy to validate foreign commercial licences to enable non South African citizens from up country Africa to fly South African registered aircraft based at Lanseria.
One might therefore suppose that such a thing could happen again. Work permits would presumably not pose a problem because the required recruitment would not be able to be satisfied by the local market.
But even were all of this true one might reasonably ask what was wrong with the scheme anyway. It's not as though nepotism had interjected into the recruitment process is it and if true the proposal would surely be nothing more than most egalitarian in its application, advocating as it would the transport of the minority by the masses?