Ok, The old thread got buried/off topic, but I still wanted to share my latest tech tree design with anyone who cared. 
I have been away from the internet for two weeks or so, and am just now downloading .21 (been using .20) - and am very glad to see that some of the issues which I found with .20 may be resolved in .21..
On to the tree: While I was away I managed to put together what I feel is a great tree layout. I got as far as modifying a LOT of the units/buildings/everything for balance and flavor purposes -- and the gameplay was much better than using the default tree.... in version .20. I realize that things will need retweaking with .21 -- but that won't keep me from looking at changing the tech tree, because frankly - the default tree is not my cup of tea.
Here is what I have: Any thoughts?

I have been away from the internet for two weeks or so, and am just now downloading .21 (been using .20) - and am very glad to see that some of the issues which I found with .20 may be resolved in .21..
On to the tree: While I was away I managed to put together what I feel is a great tree layout. I got as far as modifying a LOT of the units/buildings/everything for balance and flavor purposes -- and the gameplay was much better than using the default tree.... in version .20. I realize that things will need retweaking with .21 -- but that won't keep me from looking at changing the tech tree, because frankly - the default tree is not my cup of tea.
Here is what I have: Any thoughts?
Spoiler :