I have finally worked out a system that allows me to pump out low and med poly trees at an unprecedented rate.
So, enjoy the first ones:
http://beherith.eat-peet.net/stuff/ctrees.7z (23 trees)
5 trees of varying sizes, tricount is 1300 on largest, and 300 on smallest.
Sorry about the crappy screenie, im in a rush today:


They look very nice ingame though.
PD CC or whatever license, use them as you wish.
All kinds of non evergreen trees are possible, 5 trees takes me about 30 minutes.
Edit: added 10 more trees.
Edit: added 8 more.