Hey, is there any way to disable/alter Minecart Chests contents? I’m looking for a way to do Nether-themed Mineshafts and default items added into those carts just don’t fit my vision of the mineshaft system.

I'm closing this issue, as you can now do this in Minecraft using loot tables.

https://minecraft.gamepedia.com/Loot_table#Custom_Maps

At the moment there isn't a way to do this, but it would be a nice feature.

theres a mod called "too much loot" basically it scans the chest spawn stuff on generation and compiles a list and then u edit the config to change what can spawn and what cant... idk if it works with minecarts tho