It would be quite useful for modpacks. If a certain item is locked behind a goblin-only trade it will allow it to be viewed like any other tradeable item with JER installed.

JER is just a JEI plugin. I doubt it has any hooks as it was never meant to be used as a dependency. What you actually mean is Golbin Traders should have a JEI support.

Thanks for the correction, I apologize for not being very knowledgeable about this stuff haha. But yes, JEI support would be great for modpacks, being able to let players know that rare, uncraftable, or one time use items can still be gotten/reobtained through rare/expensive goblin exclusive trades.

This would be really nice.