The Taliban are not a viable force. It will be difficult for them to wipe out Masud completely from Afghanistan. However, if they achieve this target even then they will not be victorious. Paradoxically, their success is in fact their defeat. Because through out in Afghan history, a mullah has never ruled the country.
Afghans are conservative, traditionalist and nationalist, but they are by no means fundamentalists.
In the current situation, the overwhelming silent majority of Afghans, specially the Pashtoon, are following the policy of wait and see. They neither like Taliban, Masud or any other fundamentalist and extremist group of the right or the left. But they don't fight any one of them, because, they understand if they fight one of them, it will certainly benefit the other, while it is difficult for them to fight against both of them simultaneously. They will, however, have to struggle against the victorious party, most likely the Taliban. In this struggle, they will certainly be enjoying the support of most of the neighboring countries and the west.