Great, fantastic new money sink idea. You pay to complete those quests that you don't want to do.
1M for Novice 2M for intermediate 4M for experienced 8M Master 16M for Grandmaster 32M for Special super master quest.
Great way to remove gold from game and allow players to get higher. I'd be well up for spending in game gold to complete some of those quests I have left incomplete. They get in the way of doing what I enjoy doing in game. Getting exp init.