30 min game or more?

I think it would be cool to have more time to hunt and stalk, I really love to play with my prey, watching them, waiting for the right moment, but I always feel that pressure from the timing lol, maybe a mode where there is no timing at all, one or 2 predators on a map, every 15min there is a escape point if u wanna stop u can try to get the chopper, or u can stay and hunt predators or looking for stuff/missions … (excuse my English)