When I was writing that post I was mainly thinking early game. With the way FTB does its worldgen diamonds really aren't too much of a problem. Especially if you have a fortune pick, which isn't too hard to get with thaumium tools. I'm definitely not saying it's a good thing, nor am I saying I want it on the server, I'm just putting numbers to it so people have a better idea of the situation rather than "oh mah gawdz u can make diamondz frum wood lol". Not accusing anyone of anything, I was just curious so I did the math behind it. It isn't as OP as when i first read Weylyn's post, but it's definitely still OP.
On the note of early game though, it just isn't practical to do that. You won't have the resources to set up a large tree farm like that (I'm assuming Steve's Carts) to get that kind of output from it. Endgame, you really have the resources that you wouldn't need to transmute wood into diamonds. If you think I'm arguing for EE3, I'm not. I'm only trying to look at it from a logical perspective. That being said, mid game is probably where it would be most OP, as chances are you have an abundance of some materials (wood for example), and lacking in others (iron is usually my limiting resource). With EE3 instead of playing the game you could very easily farm a minium stone and get all the iron you'd ever need, as even a forestry tree farm (new ones as well as old) would be able to supply the wood for 3/4 of your resource needs. Admittedly, it would be slow at first, but still is very OP.
to Nan: I had no clue Pah was scrapping his efforts for equivalency. That makes it even more clear that this mod shouldn't go on the server. I've got nothing against the guy, but going against the wishes of what seems like 3/4 of his mod's community is a dumb idea on his part.