BigDebuffs is an extremely lightweight addon that hooks the Blizzard raid frames to increase the debuff size of crowd control effects. Additionally, it replaces unit frame portraits with debuff durations when important debuffs are present.

This is a backport made by Brues...the same gentleman that backported WeakAuras for us.

Not tested by me

KNOWN ISSUES: This is not a fully functional backport please see the README file from Brues below:

"The backport is based on BfA BigDebuffs. However, the backport does not contain any raid frame modifications (number of debuffs shown / crowd control effects) since the new raid frames do not exist in WotLK (they were implemented in Cataclysm). The backport is essentially a much improved version of LoseControl."