Gah! Playing gregtech 4 hardmode with only cassiterite/tetrahedrite for tin/copper (disabled ic2 and forestry gen for those metals), and you need about 300 bronze to advance to electricity.
Nearly home from a multi-day sojourn where I managed 6 stacks* of cassiterite and 4 stacks of tetrahedrite. 50 meters from my home I found a ravine partially exposed in a river's deepest spot. I dove down to take a peak, and a creeper casually walked off a nearby ledge into the stream and exploded me while he was swimming up. All my stuff flew in all directions from the top to the bottom of this ravine, then flowed all over the place when it hit the flowing water at the bottom.
*blocks only stack to 16 in this particular config-pack
Total damage done: I came back with 3 stacks of cassiterite. That's it. I almost rage-quit.
I can at least admit I partially did it to myself, by stupidly *exploring just a little more* even though my inventory was full, and also maybe a little by playing the new gregtech with all settings as hard as possible.
Edit: I suppose the point is this: Gregtech 4 is everything some of you LOVE and some of you HATE about previous GT editions, x10. I look forward to the new Unhinged pack.