I sadly couldnt use the request feature i do it this way. Im using Mage t2 and i cant really see it the 8/8 bonus is calculatet. maybe a "procchance" or/and a tooltip that shows it would be helpfull. Also Some tooltips in the config could help to unterstand it quicker. All in all i always wished such an addon its really cool thanks for it :P

Enable showing "Average cast time" in the tooltip settings. If T2 8 set is being detected, the average cast time displayed should be lower than normal and assuming that 10% of the time, the cast time is brought down to 1.5 sec (being the global cd incurred after instant casts).