A seed is not larger than the fruit. Rohingyas have little resources at their disposal comparing to BD. They will have to depend upon the people of BD for shelter, sympathy, arms, and foods.I believe most of Bangladeshi will agree with your two points . Now the case is if govt will take the risk or not.
As what if this method backfire to Bangladesh ? What if we give them weapon and then later they use against us?
However, my personal preference is to sympathize with the Buddhist Arakanese. Burma will then be unable to finger point at us because they are not Muslims. Also, Rohingyas are easy to turn fanatics because of Mullah infiltration. So, Buddhists are a safer bet.