We don't ask Saints who have gone to heaven to pray for us. We do ask people here on earth.
Why did they put the flowers there? Because they loved him. Because they wanted to do something to remember him.
They don't pray to Luther.
Why do Christians get together and pray and discuss? Because the Bible tells us to. The Bible doesn't tell us to pray to those who have already gone to glory though. But we shouldn't forsake the assembly of ourselves together here, we should pray for one another here, and we should edify one another.
It does?
But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father which is in secret; and thy Father which seeth in secret shall reward thee openly." [Mat 6:5-6]
Yeah. That's what I mean by discontinuity - which I'm using not as an evaluative term but as an attempt at a descriptive term. I have to think about this. I just don't see the great gulf fixed between those who haven't yet died and those who have.
And as to the discussion thing, I would say that the Bible gives us permission to have these conversations. The impulse is already there, for a lot of us.