Ha Ferous, imagine a 25 people raid and all those unfiltered debuff bars on a boss mob ... not good.
That's why I don't like bars to show buffs/debuffs, btw. They don't show any more information than an icon does, but take up WAY more screenspace. I mean some few filtered ones, maybe. Just because they look nice. And yes I think they can look better than icons in most cases, even though that doesn't make up for the screenspace they use up, imho.
@Clique
While it's good for PvE, it's bad for PvP. why? Because you end up being slower, because you mouseover everything OR you end up having your 2 billion keybindings + clique bindings. One way or the other it's better to play without it IF you are doing PvP AND PvE. It's really great for PvE only, though.