[RowdyScot]

I think if we have a set and defined list of what would be okay for the "non-raping/free give," and have everything else be "find it the old-fashioned way," that would be what I'd like. Honestly, the two I can really think of for that regard are Glowstone and the Mossy/Cracked Stone Brick. Possibly Nether Brick. That preserves the Nether's light sources, Strongholds, and Nether Strongholds. Those are the three that I would think fit in the "not thoroughly destroy" category, though I could go either way on Nether Strongholds. This leaves diamond, lapis, gold, redstone, etc. as finding on one's own.