Replace Bile Bomb with Structure Devour (but with a better name)

Give the gorge the ability to devour their own structures, as well as crags, shades, shifts and whips.

When the gorge is empty, Left Click makes the gorge eat the structure in front of him.
When the gorge is full, Left Click activates the structure's ability (see below)
When the gorge is full, Right Click makes the gorge spit the structure back out.
When the gorge is empty, Right Click makes the gorge make a little farting sound.

Oh and if the gorge dies, the structure dies too.

Depending on the structure inside him, the gorge gets different abilities:

Clog - Bile Bomb
Hydra - Hydra Spikes (weak)
Babbler or Babbler Egg - Babbler Ball
Whip - Whip Tongue
Crag - Heal Wave
Shift - Energy Wave
Shade - Ink

This ability does two things:
1 - Let Gorges move structures
2 - Turn Gorges into more versatile support units