Minecraft Classic Mode

A Minecraft "challenge", or just a way to make the game feel like it used to when I was a kid :p

Premise:

• Keep inventory off o_o
• No shields in combat (shields are completely broken and remove almost all difficulty from mobs)
• Armor is crafted with blocks instead of ingots (makes progression much more interesting, loot much cooler, and the game much harder) - You can always make leather though :p
• Can't sleep through night (can't just completely side-step monsters)
• Can't steal from villages (get the resources yourself you thief)
• Not allowed to dig up through caves to get back to the surface, you must navigate your way back up (makes getting lost a genuine concern of caving which is extremely fun and cool - entirely changes how you go about caving)
• No elytra! (Enable the experimental minecart improvements (https://minecraft.wiki/w/Minecart_Improvements) and set the speed to like 1000!)
• No buying enchanted books or armor from villagers (I'd still enable the villager trade rebalance experiment for the loot changes (https://minecraft.wiki/w/Villager_Trade_Rebalance))
• Don't look anything up!!!
• Moody brightness (optional but it's neat)
• Maybe play with a terrain gen mod (optional :p)
• Hardcore if you're up for it, I don't think this needs the challenge (but maybe you're better than I)
• Hard mode either way though :p
• Blocks for tools if you want (I like it)
• Ethical animals?