Unfortunately nameplate unitIDs aren't valid targets anymore in 7.1 because blizzard didn't like the idea of grids like iTF, so iTF doesn't work anymore.

Even if someone finds away to create addons like this, blizzard said they would block the methods used so unless blizzard decides to allow such addons, you won't be seeing any updates to ITF (unless people want me to modify it for debuff tracking)

Mirrors nameplate units into static grid with different indicators
use /itf or /itargetingframes to open config window

If you encounter an lua error or you feel like the addon is missing something, write a ticket or leave a comment below.

Clickable unitframes with

Unit Name
Cast bar
Health bar
Debuffs (with spell name or spell id blacklisting)
- Duration text
- Stack count
- Flashing for < X duration
Click-to-cast (general, class, spec specific bindings)
- Cast spell
- Macro text

Conditionals for indicators:

Range
- Interrupt range (check spells)
- Max DPS range (check spells)
- Max utility range (check spells)
Unit out of combat
Current target
Focus target
Threat
- Losing aggro
- Gaining aggro
- Aggro
Priority NPC
Custom
- Usage: function(unitID) <stuff> return true end

Indicators

Glow
- Left
- Right
- Bottom
- Top
Border
Healthbar
Frame opacity

Custom conditional examples
Default layout & indicators explained

almost default layout: link
addon in use by Juzu: link (not using default layout)

iTargetingFrames