A couple of suggestions.

1. Add Devil Excerption, Heaven Excerption and Wisp Excerption and books like those into item mall. Don't think there is a way at the moment to get most of those besides GM held events.

2. Fix Netherbeast city event. Every time I try to enter it, I get a time mismatch error. Not sure about the Dragon Palace event and the other.

3. Not sure this is doable, but fixing the HH quests so you don't have to be in a 4 people PT to get the team quest.

1. What's the purpose of the above mentioned books?
2. Currently, our server ram can only take the important instances and dungeons. Additional dungeon/instance may cripple the whole server.
3. That would require programming/development which we don't have as of the moment.

The books are:
Sacrilege Excerption, Devil Excerption, Heaven Excerption and Wisp Excerption. There is a Wood, Earth, Water, Fire, Metal, Moon and Sun of all those books.

Having one of them opens a quest like this one:
http://www.pwdatabase.com/my/quest/2111

You get 7 items for doing all the 7 quests the books gives, those quests that is used in another.
http://www.pwdatabase.com/my/quest/3385
http://www.pwdatabase.com/my/quest/3385
http://www.pwdatabase.com/my/quest/3381
http://www.pwdatabase.com/my/quest/3373

Think there is 4 quests for each job.