Automatically bookmarking new Personal Best runs would be very convenient. This game saves a new replay file for a PB, and allows custom plugins that already track in-game details. I'm sure there's a way to simply bring over timestamps for bookmarks.

Please add game events for Cod WaW Multiplayer. Examples: Kills, Deaths, Medals (First Blood, Headshot, Long Shot, One Shot, One Kill, And the Quick kills medals.)

A little indicator that would tell me if outplayed is recording or not. In-app or in-game. It could be a little dot in outplayed pink in the right top corner of the screen.

becuz i play it and it is fun

The most recent Hitman Trilogy would be a really good addition, due to the open world type play allowing for basically anything to occur.

starve together and Don't starve together

it is usefull instead of recording the whole session it would just record your wins and kills