I also agree that there are too many damage types. I mean seriously what is bone damage, and how can a shadow hurt someone. I don't think it detracts much from the game, they are just unneccessary. Having so many different types of damage means that you can't build your resistance level to one type up very high, which is good and bad, but what I dislike is what has been mentioned earlier which is that with so many different types they don't offer much difference when killing creatures. Stats like initiative and dexterity add a lot to a game though and enable a player to really customize a character, so they definitely should stay, but cutting down the damage types should be done for DD2.
On the part about junk there is too much of it in BD. You can collect so many useless pieces of equipment in BD it is staggering. There is a difference between making a game interactive and putting junk all over to pick up and immediately discard. Plus with so much junk it became difficult to tell what was actually worth having. I thought that the crystals were pretty much worthless since you couldn't get enough resistance to effect how much you got hurt in any more that a trivial way, but I thought that the gold and silver charm balls were quite helpful in both DD and BD.
Also how come lighting does water damage. The last time I checked when someone got hit by lightning they didn't drown. Lighting should be its own damage type.