Bangal sounds cool, whats wrong in that ?? I think in hindi and urdu bengal is pronounced as bangal.
The basic name for the region is, 'Bangalah' which was changed by the locals to Bangla. Arabians would say, 'Bangaldesh.' However, Bangal is used to donate the people of east Bengal and it means 'Peasants' who have little manners. Ghoti probabli came from the Hindi word, 'Ghatia.' It may mean low quality people.