There is nothing wrong with Pakistanis coming to Bangladesh as tourists or on business but we should not allow Indians (other than for cricket tournaments). You can't blame all Pakistanis for the past. It was the decision and acts perpetrated by a tiny minority; most Pakistanis were probably oblivious to what was happening. I think most Bangladeshis and Pakistanis have gotten over it.
I just don't trust non-Bengali Indians. In fact, as far as I am concerned, we should allow Indian Bengalis from West Bengal to come to Bangladesh without requiring any special travel documents. They should be able to travel to and back from Bangladesh as and when they wish. However, the only problem is that some might be hardline Hindus who might put religion before ethnicity, and want to harm Bangladesh.