Trial Chambers are underwhelming

Trial chambers are a late-ish game structure from what I've played of it. There's a lot of spawning in one area which can cause lag, and you barely even have to play them because of the mobs always fighting each other. The loot is good for middle game when you have iron or diamond, and there's so much horse armor. They're super hard to find and aren't worth the loot, only the first time experience of playing them. This could easily be fixed. Make the loot more diamond than iron, make all of the horse armor iron or diamond and make it less common, etc. Breezes are a great addition, but very weak. They could be made harder by maybe deflecting arrows, having more damage or health, or making them take less damage. Maybe the pots could have more diamonds and iron in them, or some of those really small 3x1x2 rooms could have barrels in the, with some stuff. Overall, they're great the first time you play them, but very underwhelming in rewards, especially considering how rare they are. To reward you more for playing through them, maybe have unbreaking and mending books be somewhat common, maybe four or five per structure of either. They need to have something that make them worthwhile to find besides the copious amounts of copper everywhere. And once again, they require no effort when the mobs attack each other, which desperately needs to be fixed. Perhaps make Strays not fight each other when they hit one another, like Pillagers? That would make them much harder than they are now.