The Timbren style bump stops are progressive, unlike the OEM rubber bricks which are really solid.
With the progressive bump stops you will still get a relatively hard hit at the end of the suspension travel, but these are still way better than the hammering you get with the OEM bump stops.
The way I figure it... these trucks were primarily designed to carry a load. It would seem that little consideration was ever given to carrying the people.
Getting a softer ride, with good articulation, is definitely a challenge, that's for sure.