Indeed nice writeup. It is very difficult to build second option cities especially in Dhaka. government commitment and peoples acceptance to new system also challenging. to build a well managed resilient city government support to leverage private sector financing highly essential. On the other hand strong commitment of private investment also needed. Without good transport planning mobility will definitely not be increased. basic urban infrastructure development for affordable housing, affordable transport system are the fundamentals right and needs where policy level commitment still a big challenges.