i am thinking more like the surroundings of those regions will be denotified (the agency and forest lands)and the construction of the capital will take place from scratch and the city will be spread to all the above mentioned regions..thats a lot easier and better than building an already existing city which is already saturated..metro is not possible. . But most likely Guntur Vij going to be capital... both cities are well connevted other districts as well as major cities in India.. they could use NTR university temporary and other infrastructure. . by merging Guntur+ Vijayawada+Tenali+Mangalagiri+Chilukaluripeta+Narsaraopet it could become another Hyderabad. ..