The trust scripts are mostly fine; you just have to make sure you're not using Alphinaud and Alisaie together because Alphinaud will always heal Alisaie even if she's only missing 1hp and the tank is at 1hp, and Alisaie will often be missing health because she hates to interrupt her melee combo for mechanics. And even then it's not a problem with the scripts; it makes a lot of sense for their characters, and you can easily work around this by just not taking them both except for like one? two? Scenario runs where you have to take them both.