One of the most frustrating aspects of the game for me has always been the unknown genome of a hatched pet. My suggestion is to offer a crown option to identify your pet's hidden manifested talents.
You can figure out your unmanifested talents simply by watching and reading.
I started with a basic Armament.
I looked up his talent pool online. I hatch against another pet, that I know the talent pool of.
You watch where the talents come over, and study where they drop.
Proof always comes in the upper half, always above healing Sprite is always above Fairy, which seems to always come in the lower half. Deer knight always manifests in the lower three Unicorn in the lower 4 Hex seems to b elower 2 Dragonblade and balance blade are always top 2 Tower shield and guardian wall are always top 3, and above proof.
I'm just saying, that I can tell you, 99% of the time, what talents have come into the new hatch as soon as I see it. You just have to learn how to read them