[quote=Alphakoka]
Yeah, but for some of those possibilities to occur and let some worlds to travel to another, you would have to break it a bit first....Well, getting another world connected to a world and having the two of them interacting with each other is a possibility 'True' Multiverse is incredibly big though, and since we're doing this for the Arena, any attempts of banding all players into a single group is rather counterproductive. The best way I can think of is...well, a war between two worlds encompassing several area/worlds. The players would be mercenaries or something. Enough reason for the players to stick around in a general area, interact with each other and fight.
[/quote]

I like this idea most, fits in well with the concept of the arena over all, which is at it's heart, pvp. 

I think previous installments did lack an overall story or plot, mostly because they depended too strongly on ppl creating their own.