This mod is really cool. I used it last night for Aran, since I'm not being in an interrupt rotation due to my cooldown, I wanted to be able to know when cooldowns were available so I wouldn't waste mine. If I can make a couple of suggestions, though:
a) The cooldown bar for each person should either disappear when the timer has finished, or something. It's odd having 2-4 empty bars on an interrupt fight, and distracts you from the info you need to know (which is simply just who is on interrupt cooldown).
b) Maybe if there was some way to customize the text on the interrupt bar as well would be sweet. A lot of the time you don't care what spell was interrupted (or what mob), but the bar has that info in it which detracts from the rest. If there could be an option to configure it -- I agree that sometimes that info is good to have, but if it were possible at other times to just show "Thrillhouse - 3s" where Thrillhouse is the character name and 3s is the cooldown remaining, that'd be sweet.
Anyway, cool mod
Worked great for me.
edit - actually, just remember one weird quirk; I had a poorly timed Counterspell at one point in the night (I switched mobs to counterspell something, but mistargetted a mob that had just finished casting, and so CS didn't actually interrupt anything), and it didn't show up at all in the window. Something like "Thrillhouse's counterspell wasted on stupidity" would be nice; but it's just to have something pick up the wasted cooldown more than anything.