Hello Mr Debashish,
This is really a very nice topic you ha posted here. Unfortunately there are not as many responses as deserved for this topic.
Bara Bazar is a very popular area of Bengal. There are many merchants in Bara Bazar dealling from this place. This is the only area in Kolkata which has the prescribed value of the old Kolkata. One can find the old Kolkata in Bara Bazar of Kolkata where we can find the same hand pulled rickshaws. As you said, about shifting of Bara Bazar, in my opinion i wont support your decision. I would rather say about improving the place. The place is very much conjusted, buildings are old, roads are narrow, ll this things create a big problem for the area as well as the state. But the government can take some actions and steps and improve all this.