The buffs of Oak and Queen of Thorns that gain additional bonusses (number of spirits active for Soul Power and number of kills for Compost) display only that they're active, not how much is actually gained. It would be nice if the mouseover for the displayed buff icon would show how much of a boost you get. (or at least the number of active kills out of the max cap for Compost, for instance)
I don't think any other buff/debuff icons give any hard data either.
