The equivalent of second wind is reinforcements on FT side. Second wind is far more useful then its equivalent. I think at this point (after several nerfs) I reinforce 1 time in 10 games or something. It takes to long to even pop, people just leave the game, don’t even bother when it does pop (they prefer to just finish the mission and leave).
Second wind is fine as it is. Predators have ways to evade the FT and even perk to help them in this area.