You do know that you can just hover your mouse over the quest helper and use the scroll wheel to scroll through the quests? I do agree, though, that it would be helpful to have a small arrow or some other indicator that there are additional quests below. For folks who are having issues with the quests not showing, etc. try playing around with the options for auto-pinning and auto-moving to top of the list, those might help. You can also play with the window settings and change opacity/mouse over etc. so that the quest helper is less noticeable, or only shows when you mouse over it.