I just want to get this straight. This mod does not modify the floating numbers above mobs heads, right? I know that two years ago (back when I actually made mods) that those were rendered inside the 3-d world and were not part of the 2d interface overlay.
And threat is a lot more complicated than multiplying by 1.9, since different abilities have different inate threats, and there are various other modifiers like enchantments and salv. I guess for just our damaging abilities it wouldn't be so bad, but every debuff and buff you do generates threat too, so it's hard to calculate an absolute value. Probably easier for us than warriors and druids though.
Post some screenshots of this at work so I can see what it looks like.

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No really, I'm not
addicted.
"The skill-gear curve is steep for small values of skill."
http://armorylite.com/us/Silvermoon/Spectrum