Responses:
1) Having a "Reject" button next to "Accept" would be nice. I never tried Accepting then Forfeiting as they eventually go away / get replaced by other quests, but thanks for the tip.
2) I suppose a button in the dungeon to "send all characters home and forget dungeon" would be nice for some in the beginning, but "Forgetting" the dungeon from the Travel's "Adv. Mode" Location List does the same thing already. Personally, I use Teleport as it is instantaneous and then "Forget" the dungeon when done. So, I would only use the button you suggested in the very early stages of the game, which is only slightly more convenient than the mechanics already in place.
2b) I do wish, however, there was an option to select "Characters on the road" and "Send" them somewhere else. Even more convenient would be modifying this category to be "Traveling to [Location]" so I can actually see each character is traveling to where I want them, or change their destination if needed.
3) While technically there IS already a "Bonus per point" for each Mastery skill (including past 5/6), I was hoping any 'excess' resulting from a chosen Class would have been converted to "Universal" (or the respective Combat/Magic) points. Playing the game further, however, I kind of like having to strategize with the current game mechanics.
One of the best D&D games I've played thus far (and I've played a lot). Keep it going!