Back on the subject of "End Game"...
It's very obvious at this point that it has to be looked at different than "most mmos" because this game is not going to be "like most mmos"... But, lots of people are going to be coming to atleast try GW2 from the perspective of "most mmos", and as such will be looking for aspects of what they know.
It seems like Dynamic Events in the highest level zones, will be the closest thing to the "standard mmo endgame", and something I've yet to be able to find an answer for, even if it's just opinion or from a limited resource base of Beta not always having enough people, but...
What is the upper limit of Dynamic Event Scaling? And what all changes as larger and larger groups of player join a dynamic event, like if a large guild was to schedule a "raid" and have a few hundred members show up to participate in a single dynamic event, both the more general questy type event of gather stuff or killing small enemies in mass quantities, and "world boss" style events.
I believe that the vast majority of the events scales up to 100 players. There could be a different scale for large events like The Shatterer.
Do you get increasing amounts of Karma, XP and Coin? Up to a certain limit? Higher Quality gear or just more reward items? Both? Up to a limit?
Thanks in advance for the input. =)
No you don't. Every event has the same levels of participation, bronze, silver, and gold. What defines bronze, silver, and gold may change depending on the event. You will also gain rewards appropriate to your level. So if you're a level 80 doing a level 20 event, you'll gain rewards for your level.
Finally, the events itself only reward gold, xp, and karma. Elite events such as the Shatterer may have a chest drop at the end (if you succeed) that will have loot inside. As Kaylos said, every player pulls from the their own loot table for loot drops. So player x can't affect what you get for loot or ninja loot from you.