This post is in the same vain as the others who gripe about unique mobs being camped, but....I am not griping about the campers....
Cause
Unique mobs spawn way too infrequently. 18.5 hours to spawn for one creature is insanely long.
Some quests spawn every 2 hours (Alvin), but disappear upon use.
Effect
This results in camping of mobs. How many times have we seen complaints about camping in other MMORPGs? 1, 2, 10000?
Only high-level campers win. The uniques are hard enough to kill without having to compete with people twice your level on top of it!
Special items are impossible to be obtained by everyone in the game. With a spawn rate of 18.5 hours between creatures, it would take ~105 years for 50,000 people to get the item. And that is only one item mind you.
Special quests such as the Alvin quest, are gimped. Not only do you have to work several hours to obtain the robot parts, but once you are done with this you must compete with others to be the first gimp to click Alvin when he appears. Why should you have to both a) work hours to get pieces and b) wait 2 hours and be first to click?
Solution
Create missions for special items. Make entry into these missions done with the current key system. Implement some type of quest that results in a key to the questor. The questor can then duplicate the key to give to his/her friends to help with the combat portion of the quest. And btw, make it where the key spawns a completely new copy of the dungeon for the questor and his/her team. Just like missions do today.
Special quests such as the Alvin quest should retain the first requirement a) collecting robot pieces, but should remove part b) waiting to be the first gimp to click on Alvin. IMHO once you have worked to get the pieces, you should be able to visit Alvin to get the mission key. In other words, Alvin should never disappear.
Implement quest timers. Asheron's Call does this quite nicely, you are not allowed to get some items too frequently. Big quests such as the bandit hilt quest can only be done once every 3 months (it may have changed, havent played in a while.) Make it where people can only complete quests every so often, this would fix the current problems like the Ash quest being done over and over again.
Make it where quests are always available to complete them. Why should players have to wait around days or weeks to even begin the quests? Sure, make it where quests are multi-part and take effort to complete, but don't make people wait around weeks and beat out others just to start the thing.
Anyway, my 2 cents worth.