escape/ejection system, when does it trigger?

The TAG doesn't go into Unconscious/Dead, any additional wounds will be applied to the Operator profile.

So a healthy Iguana takes 4 wounds, two are applied to the TAG profile, two are applied to the Operator profile, the TAG model is removed and the Operator's Unconscious body is catapulted to safety.

In effect it is very similar to Symbiont Armor, Transmutation, or Lo-Tech A

 

Even if Iggy takes 5 wounds. The Operator is still catapulted to a spot on the table prior to being removed.

This is important if Iggy is holding an objective, as it will be placed in the position the Operator was catapulted to NOT the position Iggy was in when it died.

 

I've always particularly liked the last example in the rules:

Let's suppose now, Sergeant Anita Méndez would be engaged in CC against an Oniwaban armed with a Monofilament CCW. If Anita had failed the CC Face to Face Roll and also the ARM Roll, then, due the Monofilament Special Ammunition, her Dead body would be launched 16 inches.

 

On the other hand the Operator still counts as full points for scoring/retreat, they're immune to Expel, and continue to generate an order. They also tend to be much better armed than a pilot.

 

ED1 should be a discount over a regular TAG. It doesn't seem to be much of one though, which is part of Annie's problems.

ED2 is pretty OK, with a couple of noticeable differences.

Biggest issues are things like Fatality and Tac Awareness awareness only applying to the TAG profile and how precipitously bad the secondary profile is in comparison to the TAG one.

So Annie needs a bigger discount for ED1.

Iggy needs her Operator to be slightly better (BS13 would do well).

Both need Tac Awareness on the Operator Profile or to get Tac Awareness on the TAG for free just like the 80pt+ TAGs.

Iggy used to be one of the better TAGs, but she's been unable to take advantage of all the recent TAG buffs while simultaneously facing an environment with prevalent top end AROs.