I have played the old style quests enough in the history of the game. If there were to be more quests per year maybe some new format for quests progression should be developed. For example if you do a quest some new skilling niche is uncovered and you get some benefit. If you do a further quest along the line you progress deeper into the skill or you unlock more difficult combat options for certain bosses. Or when you complete an achievement you complete a quest as a reward and gain something. Quest could be woven differently in gameplay to make the whole game feel engaging in terms of storyline.