I seem to remember a comparison chart of mod ore spawning a while ago between BC/IC2 and TE and it showed TE (which is what the default for DW20 and I believe ultimate at least were using) was seriously lacking copper compared to IC2.
This thread is terrible and you should all feel ashamed for any contribution you made to it. I'm going to try and find water hot enough to bath the filth of having posted in here off.
Edit: Lambert, you're still cool.
With the old version without the universal farming you netted positive saplings though not as much as regular trees. I started mine with 10 saplings on current server and I've got a couple spare stacks now.