Trickery Domain: As bad as it seems?

[Dark Schneider]

Well some things are clear about Invoke Duplicity:
- A perfect "yourself".
- Can move with bonus action.
- Cast spells from it.
- Requires concentration. (1 minute)
- Gives YOU advantage to attacks, not any other or your spiritual weapon (as I read). This is due that the image is just like you, that distracts the foe but only for you, is not like a help action.

The only thing I see DM dependant is how you could use as an image of yourself for other purposes. Can it talk? It can "talk" because can cast spells with V component, but can emit sounds for other purposes?
Also, if touched the trick would be discovered?, because it doesn't say about having touch sense included, but says "perfect illusion". So it is supposed it acts like you.

IMHO yes, a "perfect illusion" without specifing perfect "image illusion" means the duplicate is just like yourself, acts like you, and can be moved using the bonus action, other actions requires your action like if was yourself. But can it manipulate objects?, in this case I think not, because an illusion purpose is interact with other beings, but not manipulation.