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****update: they may have changed/fixed this so try this macro out now
/script SetCVar("cameraDistanceMax",30)

The zoom out macro makes it so you zoom out farther then wow normally would let you in the interface option. try it out. Put your scroll zoom maxed out in the camera option and try and zoom out as far as you can, and then try this macro. You go farther.
Zoom Out More

/console cameradistancemaxfactor 4

Error GO AWAY

/script UIErrorsFrame:Hide();