I didn't read the full thread, just the first post. But people who think Bangladesh (under current government) has the slightest (say 0.001%) intension to harm India are not aware of the reality on the ground. Bangladesh is now just like the countries of middle Asia-- ruled by foreign backed (India-Israel; China got some leverage too since last few years) dictator and a complete information black-hole. Even a few years ago, BD's army was fiercely anti-India and had goodwill towards Pakistan. After the pro-India party "Awami Legue" got the power in 2009, all those officers were killed in a RAW arranged revolt and replaced with pro-India recruits. Since then, Awami Legue arranges a funny-election in every 5 years and re-elect itself. BD's relation with Christian west got much better too as this party's agenda is compatible with them. Now BD gets higher ranking in their GDP list (without any actual development, there's no one is to challenge their idata) and it's the party officials and India where most of the money goes to and people remain poor. The government stops any kind of program from opposition very fiercely and often with bullets. They cut the capital from rest of the country whenever opposition try to arrange any big program in capital city. But as usual there were some occasion when common people tried to rise despite knowing the consequences, but with no domestic (army) or foreign support behind them they got brutally killed (people who keep tab about Bangladesh may know about the "Hefajot massacare" or the enforced disappearance (though outsiders could never guess the scale of it)). If you see the textbooks changes of Bangladesh since 2009 you'll see the number of Hindu writings have tripled in expense of Muslim writings. New writings are inserted, olds are removed and edited in such a way throughout the whole curriculum so that students become skeptical and neglectful towards Islam and become drawn towards Hinduism and India. If it all seems unbelievable (to outsiders it should), contact any local kin in Bangladesh who'll surely know if such thing is happening.
There's no possibility of Bangladesh fighting against India, it's now a piggy bank and increasingly a colony of India. People of BD are getting so MUCH anti-Pakistan brain-wash, you may see some of them in Kashmir front in about 20 years from now, fighting on India's side. BD's mainstream media (which are govt. controlled) calls Kashmiri mujahid "terrorists" since last 3-4 years and govt. officials and talk-show people always call Pakistan "a terrorist state".
No matter how much help they get from outside world, the reality is RAW is many times better than most people of this subcontinent think. Indian Hindus, no matter how much animal-like, are alright in everywhere that matters to fulfil their goal as a nation. If they don't rule this subcontinent within 50-70 years, it'll be a historical injustice.