If i complete a hard level, it would be very cool to capture that and show it my friends.

Blankos block party

Could be used to capture the moment that one of your beloved pawns dies

Its a awesome twitch game that everyone enjoys.

For Tarkov, when capturing the full session, you could add markers for when each run starts. This could also be applied for other games too.

it would be nice so you can show your friends when you beat a hard boss.

so you can relive the fights without jumping through a long video

Hitting max style as a highlight would be very nice. And in counter, deaths as well would also be quite nice, so that I can see what I did wrong, or be able to see exactly where in the recording I reached the new boss mission