This addon is meant for players that want to stick to the default UI.
You can scale the Player, Target, and Focus Frame.
/fscale
I am also planing on adding a function to link a FrameScaler profile to an EditMode Layout and add specc profiles.
Note:
Luckily blizzard added this into the base UI via Edit Mode so this addon is useless for retail once DF prepatch launches. I will keep it, as is, for classic but won't add anything.