I'm considering working on a hard mode next week (currently focused on other things for this week), and need some feedback.

For one, is this something that interests people? You would have to train combat stats, but you'd have other boosts to help make up for it. For example, you might have x% higher drop rates, x% more slayer points per task, etc. If you'd be interested, what would be fair boosts and what should the combat XP rate be? Currently I was thinking about x250, which isn't god awfully slow, but isn't too fast that the mode would be pointless over setting stats.