
To make the survival tool more versatile, there should be an upgrade for the heat blade that functions like the Thermoblade from previous games. However, I believe there should be two differences in SN2:
The blade should require energy to operate, and the tool itself already has the perfect spot for a battery in the form of a hole that is only used during the animation when first picked up. The battery is only used during cooking.
Fish cooked this way should be slightly inferior to those prepared in the fabricator (the blade’s temperature alone probably won’t cook them as well as the fabricator), but still better than raw.

This upgrade could also affect how long predators leave us alone after we attack them
This could be the way that they impkement fish killing with automaticly cooking fish

I really like this, I wan’t to be able to cook fish with sometype of Thermoblade again,