All of the original job change quest work exacly the way they should (like the onces on RMS listed) with a small exeption in the bard quest that is not really a big bug, just a confusing one. (when talking to santa for the jack frost side quest he will not give you anything but you can still continue with the rest of the quest).
Our server has all of the original quests implented (with an exeption of bralasis dungeon, you don't have to do the quest yet and can walk into the dungeon straight away). However our server has removed repeatable exp quests to motivate parties (with an exeption of the new world repeatable exp quests). We do however have a monthly repeatable quest that gives exp and some other rewards such as gold, alliance points and life ensureance, called Monster Extermination.
I hope i have awnsered your questions enough with this info and otherwhise i'll just awnser any more questions that might pop up
P.S Sorry for any possible grammar mistake, writting on an ipod doesn't always make me write as smooth as i wish xD