The new cooldown bands in TTK are a lot better than the old percentage system and make it a lot easier to balance INT/DIS/STR using different combinations of gear. One thing I have noticed that they don't do correctly is to track changes to the baseline cooldown times based on class perks. For example, using Bladedancer and the Fast Twitch perk your base cooldown (before any other modifiers like STR are applied) is 5 seconds but the stats and banding still say 1 minute when no gear is equipped. It also occurs that the second charge on some abilities (Sunsinger with Gift of the Sun for example) seems to cool down slower than the first instance. It would be nice to have some sort of in-game information on the cooldown of the second charge compared to the first.