Debuff scale
 

I am looking for a macro/addon that changes the debuff scale. I would prefer to use something small i only really need to change the scale of the default debuff icons.

I'd recommend PhanxBuffs.

Yes i have tried that but it makes all the buffs use one line which in 25man raids will go across my entire screen and half of them end up behind unitframes etc.

Regarding customization of buffs/debuffs, there's only one addon to recommend (in my opinion):

SBF3