Guild Wars 2 Beta Changes Interview

Massively had the chance to chat with ArenaNet's lead game designer Eric Flannum on the changes that are going to be present in Guild Wars 2's next beta weekend event. Here's a snip:
We've seen key-binding customization added in as well as UI improvements -- is there hope for UI customization options (beyond overall size and minimap resizing) down the road, or should players try to get used to the idea of not being able to fiddle with the UI?

While we aren't going to allow players to mod their UI to extreme levels, we are always going to be looking at adding new options and UI improvements. If a feature is being requested by a large number of fans, we will always evaluate whether or not we can and should add that feature.

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How will the new PvE elements feel like they're intersecting with WvW gameplay, rather than running parallel to it? Will they have any bearing on WvW? Might players find blueprints in treasure chests or anything else to help them feel like they're contributing to the greater fight?

The mini-dungeon we added to the WvW center map was added with PvP specifically in mind. This goes for how the area flows, how traps work, and what reward you get at the end. There are definitely blueprints in the chest as well as other things that WvW players will find valuable.