Shimmer phasing seems a bit broken, since it allows you to make an easy invincibility machine and beat anything by just letting your minions do the work. Enemies should be able to damage you while phasing. You can also just phase right on into the Jungle Temple, which could be fixed by just making it consider natural Lihzahrd Brick Walls as occupied space so you continue phasing until you come out of the temple at the bottom.
Tbh, though, I kind of feel like the Jungle Temple needs an entirely new mechanic to keep players out instead of this arms-race of patching every individual exploit players find to get in. It feels like it doesn't really belong in the game because it has so many restrictions that don't apply to anything else. Honestly, it should take a page from the Dungeon and just kill you with an invincible Golem head or a health-draining debuff if you get in early, and let players try to teleport or pylon or shimmer in if they want.
I also don't like the change to the Temple's wiring for similar reasons, since it's unintuitive to the player. Instead of the Temple just having invisible wiring, either the traps should be able to function without any wiring, or they should use something like a unique wire color that can only be seen and harvested with an upgrade to the Grand Design. Or maybe Lihzahrd Pressure Plates are unique in that they also trigger when a wire path connected to them is cut, so you can see the wires but can't just cut them without triggering the traps anyway.
Also, it's unrelated and very minor, but being able to just equip Echo Chamber for its effect makes Spectre Goggles redundant. Echo Chamber even works from your vanity slots, whereas Spectre Goggles don't, so Echo Chamber is just better. Which is weird when it's barely any harder to obtain.