Did anyone ever use LESU? It is so extremely expensive, that I don't see why anyone would ever want to use it... it would be cheaper to create a chest full of lapotron crystals and feed them in and out of a MFSU. On the top of that the limited output... I just can't find a way in which it could possibly be useful.
Also, Greg, are you planning in rebalancing TE in gregtech? Right now, it's pretty useful for all the cell emptying/filling recipies, but otherwise it's one of the most OP mods out there... pulverizer is better and cheaper than macerator, induction smelter is cheaper and can do a lot of blast furnaces work (like pyrite smelting). And the buildcraft-energy battery, which completely breaks MJ power system with it's OPness (although this last one doesn't really interfere with gregtech).
Lastly I just wanted to say that Gregtech is awesome, improves the way technical mods are played in general, you are a visionary, etc.....