BD is more important geographically in your NE. You lose Arunachal without BD support. The Indian Ocean has become a fishing ground of China with our assistance.Even their position in the Indian ocean isn't much advantageous, being far away from any major SLOCs. I don't see how Bangladesh can be an important nation geopolitically.
So, do not worry and think about how India will save its neck without American help. But do not forget Afghanistan. America is gone already. Can you trust that country?