I think it more likely,
bilbo_baggins, that such an endeavour would tend to produce more arugments, er, excuse me, discussions

, over the validity and truth/Truth of the particular form of culmination which said Culminator has produced, leading undoubtedly to several Culminations, each arguing for the inclusion/exclusion of particular threads and movements as either more or less representative of BarrowDownsedness.
I'm sure this would keep us admirably amused but perhaps might occasion even greater confusion for the newly dead. I say, let them wander among the barrows and find their own way!
As for erasing untouched threads in the bottom of the barrow, Eru forbid! Someone is always sure to come along and find just that right old brooch which everyone else thought was just some tarnished trifle.
btw, it's always good to see Downers returning. Welcome back, enthusiastic one.