Someone had suggested earlier today an in-game leaderboard and counter for clue scrolls: alora.io/forums/topic/13303-clue-scroll-counter/
Both that and this suggestion are great ways to get more players doing clue scrolls but the fact is that right now they just aren't really worth it, most rewards for hard clues don't sell for a lot (even third age) and I've never seen anyone get any good loot from elites.
We need to change up how clues work or what rewards they give to really get players motivated to do them.
But support, nonetheless.