I know the UU System in IC2 Experimental was currently balanced around Quarry yield, but It so seems that currently 2 Diamonds are worth about the same as a single Clay Block.
Most Quarries aren't designed for surface mining, especially for things like Rubber, Clay, Clay Brick, Hardened Clay, Wood, Cactus, Ice, Packed Ice and Snow.
I propose to lower the cost of most Uncommon Surface Blocks/Items to be roughly around the Price between a Single Lump of Coal and a Single Iron Ingot.
I'm just finding clay way too expensive as is. Haven't tested the other materials due to scanners taking forever to scan. I don't want to be forced to change the Config of Clay UU cost every time I want to play IC2.
Edit: I'm also finding other "Commonly-used to build with, but super rare if you try to quarry it" blocks being super expensive: Mossy Cobblestone, Red Sand, Melons of both types(Blocks go for 559 or so FULL Buckets of UU, not millibuckets), bookshelves cost 200 FULL Buckets EACH, Podzol/Mycellium and Mossy/Cracked/Chiseled Stone Brick register as Dirt/Regular Stone Brick, Mycellium/Packed Ice/End Stone refuse to register at all, but at least Nether Quartz Blocks are well balanced.