I do not know for sure if there will be missions or quests in the game. However, I will assume there will be.
I am wondering how you will handle missions/quests in the game. Unfortunately it can be very challenging to create missions and quests that does not involve an excessive amount of "Kill 10 of X" and "Get me 6 Y" in order to create fillers of content to make people spend more time in the game.
Will there be story writers that will create "campaign"-like quests/missions? It would be nice to see story-writing on pair with "Star Wars The Old Republic". They really handled it very nicely. Even Age of Conan did it too - although it did have a bit too much "Kill 10 of X" type quests.
Will there be any voice dialogue? Perhaps a mix with voice overs and with only text?