First of all thanks brother for at least agreeing on the fact.
Secondly,when I talk about forgiveness with my fellow Bangladeshis,I try to use Islam as our guide.But then a frequent question which comes to me is,"Did you lose anyone in 1971?"---I say no I didn't.Then they say you won't understand.And they are right.
Now at this moment when people are demanding for an official apology,probably something solid,not just speech,I think if Pakistan do that,then relation will improve a lot.Now Pakistan can also follow Islam in this regard as asking for forgiveness does not make one small instead it makes him more respectable.
I would say most BD people would not mind reestablishing better relation with Pakistan after the apology.There will still be people with hard line stance but their number will be too small to stir any problem.