A. Wild Goose Chase
The target hut for the wild goose chase is quest level 3 while the original hut is level 1. YYou therefore can not finish this quest erly on.
B. Lost Horse Quest
This quest rewards two horses instead of one horse
C. Most quests
Why are there two screens, to notfie you about the quests including a full screen image. Simply showing one dialogue would not break the game flow as heavily (will provide screens the next time i find this)
Is: 
And:
A nice quest dialogue (while a finishing one) is like this:

The full screens are nice the first time you play the game but get old very fast. Furtehrmore they completely break the gameflow as nothing is to be seen from the game itself. A small dialoge in the top works much better.
Obviosly if you want to stay with this arrangement of quest they should be changed to use the same style, so eitehr teh diplomacy style or the parchment one.
D. Brigands
You have to fight the Bandid + Wolf twice