The 8x8x8x8 refers to the nutritional values of the food. Check the pie chart in the bottom left corner you want them all to be even and also the highest numbers possible.
The higher the numbers the more skill points you will gain per a day
Thinking more about it, the tool level shall add to mining too. the higher tier the tools, the more comfortable you should be when mining.
Let's say If you want to break a material without having to rebreak the yellow blocks, you have to have a pickaxe made of a higher tier:
To mine Stone you need Iron pick (if you have a lower pick, like stone, u have to rebreak yellow stone, when you reach iron, no more of that)
To mine Iron you need Steel pick
To mine Copper you need Modern pick
Gold, not possible, you always have to rebreak yellow blocks.
That's just my opinion, do what you want guys, i love the game anyway :p
I would also like to see the ability to make announcements in game from the server console. This is essential to streamlining server administration so admins don't have to log in to the game to make shutdown and other announcements.
Well, that's 90 additional objects that you aren't rendering per stockpile of things that stack like stone, or 45 objects of anything that stacks like dirt. Considering the number of stockpiles that I end up with in a small area, this seems like a good thing. I would say that this is entirely intentional, and it's barely noticeable unless you just happen to stand in the right spot.