1) With a wand or scroll, I believe so. (since you use enchant weapon and armor scrolls on specific items) Not sure about a potion, I never thought to try targeting one, though I know there are remove curse potions so maybe it can be done. The best way to drop it is not pick it up from your corpse when you die. And there are maybe some other ways it can be gotten out that more creative people than I might know. (can a no drop item be put in a container and the container dropped?)

2) Probably just oversight. Why does hear light still appear on the bard list when it was removed at least 5 years ago? I doubt people look at those helpfiles very often and clean them up. Natural weapon specialist is not listed under warrior racial edges or in general edges for example, though the dwarf ale ones are (I think only warriors can take it though)

3) Probably the base line without regard to the per level adjustment. Or the amount you can carry at level 1.

4) Yes. Kill everything, not really, no. Though for me, I think the main demon thing is the only thing I could not kill. But I did go through often with a welf bard, from the shapeshifter, to the paladin, to the fire giant to the demon. Takes a long time though, and getting through a certain tunnel and such is not without it's risks.

5) If that's through the gauntlet replacement (not sure) I've never actually made it that far to know. But there is almost always a way out of a room. Just not for everyone. Sanctify Room usually works.

6) Cause you have too many favorite pieces of gear. The Tiny Iron Dagger is all you ever need in CF, the rest is just fluff.