Hello, my first post, yay!
I marked down "don't care" but I would also like to add an explanation.
I haven't read through the thread so if this has been mentioned already to death then please excuse me.
The problem with gaining "quest only xp" verses "quest+killing xp" is that it is really reaaaaally hard to balance "quest only xp" with enough quests that are unique and engaging and not just a dozen iterations of "gather 20 coconuts".
Questing for XP can become just as much of a grind as Killing for XP.
A dozen iterations of "Kill 20 pigs" vs a dozen iterations of "Gather 20 coconuts" can both amount to the same poor player experience.
Ideally I would like to see something where only a certain percentage of each levels XP can be gained through killing, maybe 20% and the rest has to be gained through questing. Basically, in my ideal world, the player would have two options (a) Get 100% of their XP through quests, or, (b) Get a maximum of 20% of their XP through killing, and the rest through quests.
This is an action game, there needs to be fighting, but it is my opinion that a person who just grinds a single fight over and over to fill up an XP bar is probably missing the point of the game, but then again ...hey, its only a game, if that is the behavior they paid to play then that is their loss. I just don't want to be forced to follow their example, or else feel that I am somehow lagging behind the optimized way to play.
Cheers,
A.C.