these quests once the chain is completed then you should be able to run the main quest at any time you want and if one quest is shared and you try to advance to the last the whole thing resets and your back at the start what does this accomplish besides the player getting frustuated and probably quitting not to mention the fact that on the sever i play on it is very hard to find a party that is willing to do a whole chain so when one drops group (always a healer type it seems) you have to look for some one that doesnt mind skipping at least one quest in the chain i could go on and on about this issue and others