Be careful what you wish for. We have both superpowers on our borders and I for one am very scared of the implications. What a country may gain in trade and economy from being a neighbour to superpowers is negated by the loss of identity and sovereignty. It is a human constant that when a culture or civilisation is successful, it will inevitably try to impose and assimilate those smaller cultures around it. All joking aside, I would be very surprised if India did not atleast try to influence the politics of Bangladesh, if not for imperialist reasons then to pacify a neighbour. The Chinese have since forever been trying to influence Myanmar and have been trying to bring us into their sphere of influence. We have so far managed to fight off such ambitions but it will be hard to maintain our identity in the face of such a large and powerful country. Thankfully we have another power in India which we can for the moment use to counteract the Chinese but even they will have to be treated with caution in the long run. More importantly, IMO, South East Asia is the key. Greater regional co-operation will inevitably mean the increased importance of ASEAN as both an economic and eventually military union.
Objectively, I don't see how Bangladesh, which is a small flood prone delta, surrounded on 3 sides by India, will survive as an islamic island identity unless it looks to seek better relations with SE Asia and specifically Myanmar. That's why I find it amusing all the jingoism and empty pride being shown on here a lot of the time.