If you extend the timer to 20 minutes nothing changes unless your going against noobs. A good FT will apply OBJ pressure or hunt you. If they’re applying pressure you have to rush them. If they’re hunting you your not stalking them.
Not to mention this would make those camping spots so much worse (underneath the huts for example) and this would nerf the pred’s timer pressure as well so those death squads that don’t do the OBJ, they’re getting a buff.