gok sumarriesed it well.

What you do with your toys is your own decision. If I step into a house of MISB displayed, I will make a point not to disrespect the person, likewise I expect the same to whoever steps into my house.

One thing for myself, is not about keeping it sealed. I can take out my toys and place them back into the box. It helps if the box is nice looking.

But when I see a box protecting a box, its where I feel its a bit over the top, especially if it is not a 80s toy.