While playing on Elite difficulty, they are MUCH more likely to revive other menders. And by much more likely, I mean they will revive each other the instant one dies. This is extremely annoying in an arena situation, where the two menders are often blocked by Mecha Knights or other monsters that form a solid wall, making them hard to reach; when you're able to kill one mender, the other (whom is probably at full health due to you focusing one mender) will dash over the moment his pal dies and revive him. There is no time for repositioning yourself to shoot at the other if you're a gunner and there's barely enough time to re-charge your sword if you're a swordsman - To kill both for certain without wasting 5 minutes of your time, you usually have to dive into the middle of a large group of enemies and take hits to ensure one doesn't revive the other.
It wasn't so bad before because you had a little bit of time before one decided to revive the other, if at all. But now? It's the first thing they do. They stop healing other mobs, they don't worry about their shield. Their first priority is getting their buddy up again.
I don't feel like that was a good gameplay decision. I do think they should be able to revive each other, that's essential for needing to focus them down. But now that they revive each other instantly? It's infuriating. I believe they should have a grace period of 4-5 seconds where a Gremlin (I use that term loosely, since I don't see many menders revive any Gremlin who isn't also a mender) cannot be revived. That allows someone enough time to kill the other mender if they're quick, while still punishing them for not killing both menders in time.