I hope reaper trees are part of the balance.
I would love to see reaper tree benefits change to negatives you must select. And as you gain points, you must spend them, to continue to earn rXP.
This would also make rXP leaderboards in HC, actually more meanigful.
Add a vendor to be able to trade for stuff, including exclusive cosmetics, raid runes, DDO points, rare loot and augments, etc. You can then spend your rXP away, but if you want the best options, you will zero out your current rXP, which also removes the penalties associated with earning rXP.