the gems are definitely not 'balanced', you can have a few dozen diamonds mined up by hand and have a few hundred sapphires and rubies. obviously letting players use more common materials to build powerful items is not what greg intended.
side note: why couldnt someone just increase the cost of items, and not complexity like greg did? Can't a recipe just call for a stack of an item? Change a quarry to require 5 diamond picks and 20 iron gears, not 1 pick and 2 gears. No added tedium, but it makes it more of an investment. Longer time to mine up those resources, and harder to build a second or third quarry. Shouldnt a machine that does so much be pretty hard to build? There is a reason almost every single player uses them, other than people who get fancy like turtles and mining wells, etc.
the EE3 ideas are awesome... just not balanced. An enderpearl should be like 8 gold bars to make, not 4 iron. Or a diamond or something. I heard the guy doing EE3 made some new system that is supposed to figure out EMC values nomatter what mods you use to stop exploits, but it should be expensive to change things into other materials. Really, ender pearls go from super hard and rare to aquire, to super cheap and easy. That isn't the definition of an 'equivalent exchange', is it?
everything is imba compared to gt. period. seriously, it would be easier to "buff" gt than "nerfing" everything else, to achieve "balance".
you cant do that because of technical limitations of mc. you could implement multistage crafting process with bunch of useless mid-products, but its just nothing more than pain in the ass, with 0 complexity.
i hardly see any complexity in gt except of fusion reactor and distillation tower. fusion reactor takes its complexity in automation of fuel supply and has a bit of output variability(although AS`s fusion reactor simply owns gt on this one). distillation gets its complexity from cell requirements, which seems to be cause by certain limitation, it would be too simply for me otherwise anyway. ind. grinder can be complex to automate but it all comes down to mod used for automation.
the problem with simple cost increase in ic2 environment is that almost everything in the mod is a single block, and thus increasing cost adds 0 complexity and just move milestone a bit further.
take a look at atomic science, and its fusion and fission reactor possible design with variable output, cost and complexity.
ic2 reactor have similar complexity to AS but they suck, which makes them rather a "fun toy to mess around" than a decent tool.
enderperls are not hard to get, but endermen are rather pain the ass to come by. so i see 0 point in changing ee3 recipe because it remove that annoyance of finding those damn mobs, that tend to teleport underground...