[quote=Ichthys]
In what way and to what extent would the haemonculi be used?
[/quote]

Let's pose a few scenarios for the sake of possibility.

1) Fully sapient creations, essentially people unto themselves. Think FMA haemonculi.

2) Semi-intelligent creations. Can take orders and act with a degree of autonomy but are generally too unintelligent to do much else.

3) Automatons. Unthinking creations that can fulfill a pre-programmed purpose, but nothing else.