The cube idea gets an immediate no from me. You said it yourself:
King3_14, on 25 November 2012 - 08:22 PM, said:
Meaning that the world would be smaller, even if the mines were deeper.
King3_14, on 25 November 2012 - 08:22 PM, said:
It would take more time to load with the chunk system that is in use ATM.
It makes absolutely no sense to completely rewrite the way the game loads chunks when we will get less space to use.
As for the globe, you said it would have mines that are 62,500 times deeper. I'm assuming your math is correct, and seeing how the surface of the world averages to be about at height 64 and the lowest you get without hitting bedrock is about level 4, that gives our current mines a depth of 60 blocks. 60 * 62,500 = 3,750,000 block deep mines. So I have to ask you:
Are you absolutely out of your mind?
Let's assume that the levels you find minerals at scales accordingly. Meaning Diamond is found typically in the levels 2-15. If you apply the same math, you get it ranging from levels 125,000 to 937,500 At a .08% spawn, that is a ton of Diamonds. HOWEVER, just to get to the Diamond levels, you would need to mine straight down about 2,812,500 blocks. Seeing how you can't get to Diamond Picks yet, we'll assume Iron ones. That is 11206 Iron Picks to get to the Diamond levels. But, let's go deeper.
11206 Iron Picks is 33618 Iron Ore, and you need 4203 Coal to smelt that. Using one Furnace, at 10 seconds per Smelt, it would take almost 4 real world days to smelt enough Iron to get enough picks to get to Diamond.
So all of that aside, You would need to make a Stone pick to get your first 3 Iron, and one Coal. But let's call it 8 Iron, just so we aren't wasting Coal. The time it takes to mine 8 Iron and 1 Coal with a Stone Pick is 9*1.15= 10.35 Seconds. You also need 8 Cobble for the furnace, so that is another 4.8 Seconds. Now, let's say that the Minecraft Gods have smiled upon you and after you get the first Iron Pick, it lasts forever until you find Diamond. No smelting more Iron. At .4 seconds per block, assuming you ONLY hit Stone, it takes you 1,125,000 seconds, or 13.02 days to hit the Diamond levels. And that doesn't take the time that you WOULD need to spend ditching cobble, getting more wood for sticks, and such.
But all of that aside, let's say you finally get to Diamond levels. You magically had Ladders placed down the entire chute. According to the MC wiki, it takes 110 seconds to climb 256 blocks (approx), meaning you climb at about a rate of 2.3 blocks per second. You get your Diamonds. Time to climb up those 2.8 million blocks. But hey, it will only take you 14 real life days to climb back up.
Sure, I made some broad assumptions. Depending on if I misunderstood what you said at any point, my math could be off. But regardless, on my current information, I have to say that I absolutely never, ever want to see this.