BlizzFader

I was a Xperl user back in the day, but i stopped using it, and i was missing a feature : The Fade out when out of range.

So this addon Fade out the Default target and Party Frames based on spells you choose.

I added also a highlight feature :

Red Color is an indicator when you are in Melee range for melee abilities (5 Yards)
Yellow Color is an indicator when you are in Deadzone range (5-8 Yards)

You can also change those color for what you want.

There is a GUI in interface - Option, or you can access it with "/bf" or "/blizzfader" command.

To change the Alpha of the Fade out feature
To disable / Enable Red melee range and Yellow Deadzone range
Change the color of Red melee range and Yellow Deadzone range
Disable the Fade out for Enemies Target
Choose a Spell for the range of the fade out
Disable the Fade out for Friendly Target / Party
A button to Reload the UI (not necessary but if you have a bug with the addon it can help)

Screen

Some screens to show you how this addon can be usefull.

Some example :

A Druid in form who want to get a range for his Cyclone.
A Rogue playing on Deadzone on a Rogue/Druid to avoid a charge.
A Priest can use the Yellow highlight to get his fear range since it's at 8 Yards, He can use the Fade out range for his Shoot ability / an Heal / Shield / Dispel range also. Mind flay Range in PvE to avoid to be smashed by a boss.
A Warlock for his Fear range.
A Rogue for his Shadow Step / Blind / Deadly Throw range.
An Hunter for his Auto-Shot range which is the range of all his ranged abilities too.
A Shaman for his Shocks range.
A Warrior for his Charge / Fear / Shoot range. Also to check the range of his buffs (Commanding / Battle Shout) and Intervene ability.

Enemy fade out

Party Fade out

Party and Friendly Target Fade out

Red Melee range indicator

Yellow Deadzone range indicator

Addon used for this Unit Frames : UnitFramesImproved_TBC