A major problem with ilum is the lag that all players receive when huge battles ensue, is this due to the graphics engine not being able to process everything appropriately, or is there a more serious issue?

Are you satisfied with the overall difficulty of Operations, specifically nightmare mode, or was this designed to be easier for entry level raiding, and will the operations and flashpoints become more difficult in nightmare mode. Also will there be some type of achievement system in place to give praise to those guilds that have gotten server firsts.