After you end the main story, Path of Exile's gameplay becomes pretty modular. You basically just run maps (single areas that are filled with mobs). Having the option to record each map you run separately would be pretty cool.

would make it easier to navigate recording sessions

Clutch videos even if the user was dead and spectating other players

Recording big achievements like killing the dragon or the wither would be cool.

In grounded, it would be nice if it could auto clip boss kills, spider kills, bug kills, deaths, and revives.

Add events like a headshot, kill, death, getting revived, reviving someone , squad wipe, tank or grenade kill, kill streak etc... and also add highlight

so you could make clips easier

It is useful for evidence or just to show off :)

So people can learn about their mistakes without having to think about recording or recording the whole session

Useful so people can auto capture scores to share.