A lot of de/buffs stack, which is a fact that is not immediately obvious. I suggest that it would be nice if some extra information could be displayed next to/on top of the status icon that tells the player how many times the effect is being applied. Perhaps the tool-tip could also reflect the total stat changes, as well. While I'm at it, I'd like to point out that when there's a good amount of effects on the player, the second column of icons cover up some information on the first column. The number of hits left on a meatshield, for instance.