This is an idea that I play with for while. Basicly it will be a world wide and world effect event, lasting for about 1 to 2 weeks. This event could be progressive*, and effect the exploration area, as well as perphas adding one or two mission/major quest or area with it as well. It could be for any story or enemy, but I will use a Charr Invasion Event as example.
The Charrs has begain a major offensive push against Ascalon, threaten even the Drawfs. Once again, they cross the wall, seeking to burn down the remaining human population once for all. In the progression of this event, you will start seeing Charrs more (in the exploration areas), like in the Moutains or cross the wall in old Ascalon (their level will be balance to to the region). You will see them fighting with the locals, and of couse, hunting down on you. As time progress, you will see them move further and further inland. also will open up a new one or two mission, where you help drive back the Charrs, or even a new exploration area as well, the Charr Tribal land. Also new quest can be given in accordance to the story.
This is to make player feel that they are in part with the Game world, part of the story and event that is shaping the whole. Much like the excitment I feel for the first time in beta, when in the last days, the "solo" areas change and begain to populate with Charrs who was not there before. Beside some time/level differnce issue, I think it would help to improve the overall game.
