It would be nice to have a slider control to allow the user to set a numerical value to pass into the script.

Example for a slider with minimum value of 0, maximum value of 100, step size of 10, and defaulting to 60.

AddSlider(pool_threshold 0 100 step=10 default=60)

AddIcon { if (Energy() > Slider(pool_threshold)) Spell(backstab) }

The names aren't set in stone! Slider() doesn't sound that great to me. Perhaps AddNumericInput() and NumericInput()?

Good idea