1. Pretty much what Moke said. We shouldn't make sacrifices for a small number of people. 2. We wouldn't be "throwing" them into PVP. They themselves don't have to fight. That's what allies and dedicated "solider" members are for. Let's say I get inside with a Chorus fruit, given the rarity, that's it, I have no more and I'm in. I see a trackpad user, I give chase. They either don't run to the nearest door fast enough like everyone else and die, or they make it to safety. That's it. They raise the alarm, allies turn up, see me trapped in whatever room I got into, we fight. Trackpad user stays out of it.
On that note, I want to point out that 40% chance is considerable. It isn't rare, assuming they don't fight back. If they fight back you're pretty much screwed unless you more or less brought an army with you.