And one more effect they need to think hard about: XP boost pots.
I buy xp boost pots for ED farming. This makes perfect sense because you get the biggest bang for your buck, short intense bursts of xp over the course of a relatively few hours of questing. It is precisely the kind of questing that XP boost pots are for.
Would I keep my level 25 in xp boost pots for the entire 16 million slog if it was just a grind for month after month after month? Are you kidding?
And here we thought they were doing everything they could think of to increase sales. Not in this case, apparently.