Dandyroot

I just started steel production for the first time, and am finding out just how much charcoal i've had to load up, and how much the process is likely to consume. It has me wondering, is this where coke comes into play as an alternative? i wouldn't THINK so, since it seems even harder to get your hands on and no more effective. But, the fact it's included in the game, as well as having a whole dedicated process to making it, makes me wonder if there's some sort of economy to it that i'm not seeing that makes it worth it to invest in. Is there? for steelmaking, or for any other utility?

That part of the wiki talks about "levels" with respect to depth below sea level. in this case, does anyone know how deep one "level" is? is it one block to a level or is it more?

I know you can't tame wolves currently, nor catch them from the world to give to traders. but, are there any plans in the works that we know of for wolves and wolf pups in the world to have use besides as just enemies? Honestly, i ask this because i do wish there was a way to deal with the pups from the wolves i kill in the area besides killing them too or putting them in an isolated pen somewhere