Hi, everyone. I run Minecraft on a Xbox 360, and we have a world we've been building for a long time (since before the TU12 update). Every time an update comes out, we find that Mojang has added cool features that don't always make their way into existing worlds. We don't want to start over, and we don't want to lose the ability to earn achievements by loading and saving in Creative mode. The surface of the world has been fully explored, so new biomes like jungles won't generate. Since generating new structures and biomes is out of the question, maybe the developers could find other ways for getting updated items into older worlds?
Trading: add a 'forester' class of villager, who offers seeds and saplings as a trading item. This would allow a way to bring different trees, plants, and wood into worlds that don't have them without rewriting the trading menus of existing villagers. Stonemasons could offer new building materials, Fishermen could offer sea lanterns, etc. Percentages, emerald cost, and other factors could be adjusted to maintain game balance.
Fishing: new items could be added to the list of things found by fishing.
Mining: some blocks could have a small chance of dropping different blocks when mined. For example--oak leaves could drop apples, oak saplings, or dark oak saplings. Netherrack could drop Nether Quartz from time to time like Gravel drops Flint. The percentages could be tweaked to maintain game balance.
Ocean monuments: since Guardians only spawn in or around Ocean Monuments, then a world without an Ocean Monument could have a random patch of seafloor assigned as a place where they can spawn naturally. This would be a balanced way to get Prismarine shards and Sea Lanterns into earlier worlds.
Bonus Chest: certain updates could include a chest that spawns in an open area near the player's last save point. The chest could contain common items like trees and seeds that have been added since the last update.
I'm sure I'm not the only one who has thought about this, and I apologize if this has been proposed and answered elsewhere, but I think that finding a way to get new types of blocks into existing worlds would maintain player interest in the game, rather than making players feel like they need to give up and start over whenever something new comes out.
The goal is to be able to incorporate new blocks that are made available via updates into existing worlds. I've thrown out some ideas for how this can be done, but if wiser minds than mine know which (or none) of these methods works best, I'd gladly favor that one.
Support, but it does seem like a wish list so I would recommend going more in depth on the details, like a paragraph or two for each sentence. I like the new villager classes other than the fishermen, it's overused and doesn't make sense, and I thunk everyone should earn their sea lanterns.
The "mining" part should be expanded on, maybe when mining stone you can rarely get coal, gold nuggets etcetera, please expand.
Ocean monuments seems like a good idea, with new areas to spawn.
I think the new villager classes would be the best way to introduce new items into worlds that didn't already have them, especially the Forester class, since wood, saplings, seeds, and flowers aren't particularly rare. The problem is you can't craft a jungle, acacia, or dark oak sapling, so why not create a villager who sells them? The Forester could have a green apron and a low spawn rate since he's basically a single-use trade. Once you've imported a new plant from him, you can grow others on your own, except for flowers, I guess.
The Stonemason class could offer new stones or ores that won't generate on their own in an existing world. Worlds built with earlier versions of the game can create Nether Quartz by resetting the Nether, but if you've built a city there you might not want to destroy it. Any new stone-type blocks that are inaccessible through crafting could be sold by him.
I'll agree that the Fisherman class doesn't work as well, since anything he could offer would be just as easily found by fishing. It would be nice to be able to craft sea lanterns in worlds without an Ocean Monument, though.
Changing the mining drops to incorporate new items only makes sense for dark oak saplings. Mining birch tree leaves and getting an acacia or jungle sapling every 100 blocks doesn't make much sense. Ditto with Gravel dropping Nether Quartz. I think the two new villager classes are the way to go.
This is primarily a console-edition problem. I guess PC players can keep traveling in any direction until they locate new biomes, while in the console edition, once you fill your map, that's it. Only way to introduce new stuff at that point is to load the game on Creative or start a new world.
Basically, the focus of my suggestion isn't to modify the game to add new features, but rather to find a way to implement the updates better into existing worlds. It's a console-edition problem.