Deth McBones
The Inconsistent Modder
have you read the Foundation series? i think some interesting ideas could be taken from this, including psychic powers, personal vs. large scale shields, and more.
I snapped up the Foundation series once I read the first book. I think I only got my hands on two or three more, but I loved the soft sci fi arguments and situations that that series threw at the reader.
Psychic powers are going to play a large role in one of the Alien civs, but the real problem lies in proper implementation of units. There is no really good animation that could be cut 'n pasted to create psychic units. I kinda wanted 'my' universe's psychic power to be limited to communication and concious-sharing as common traits and telekinesis and mind control as rare traits. The only real good comparison to existing Civ units would be Jedi force powers. If you really want to know what I have in store for the Alien psychics and have some ideas regarding gameplay, units, or just thoughts, PM me.
I also liked the Foundation series' focus on rather real technology. They had 'nucleics' which were nuclear and fusion power in the first book, and their complex and limited understanding of psychohistory was kind of a near-future fusion of economics, sociology, history, and mathematics. Also the idea of an Empire falling into disrepair just might be one of my planned scenarios (probably the last one

Speaking of books I used as inspiration, if anyone really likes a good hard sci fi book, and doesn't fear 1000 page epics, you should look into Peter F Hamilton's Pandora's Star, and its sequel, Judas Unchained. It is a huge, sprawling work, but it takes place in the 25th? century, where mankind has progressed through the stars not on FTL ships but with wormholes. It really is quite cool, and was one of the reasons I decided to see this mod through. As far as hardware goes, this book goes the whole nine yards. Forcefields, lasers, guns, even FTL ships, he chronicles it all. And throws in some cool socio-political intrigue and some good characters. (Okay enough of the shameless plug, but I really liked his books, and since we were talking of the Asimov books...but I digress)
Philadelphus,
Your radar towers and airbases are going to be implemented later in the tech tree, but perhaps we could find some applications for some scenario specific devices for the first...scenario. I usually no-change automate my leftover workers (shift-a I believe.)
Point taken on the upgrade paths.
As for the tachyons, I have tried to make myself understand that wikipedia article before. I have come close, but the best way I could relate a kind of FTL drive was to say that, much like when man first split the atom and released immense amounts of energy, so could future scientists find a way to capture charged tachyons (tachy-ions) in extremely charged atmospheres (just a way to actually nail down a type of terrain to hold the tachyon resource) and split them or harness them to propel a mass to FTL speed. It was plausible, and futuristic, so I ran with it. Originally tachyions were needed for all ships with FTL drive and could be found in the atmospheres of Gas Giants and Poison Planets. I had to remove this for this scenario, because it would be absolutely silly if everyone had ANOTHER resource right outside their doorstep. So now I have the problem of resource-free FTL flight. (Kind of a problem when you think of epic space scenario- which I'm trying to make as my final result [think of it- a civ trading up while stuck on their own homeworld, then suddenly bursting from its own system to snap up others...interesting but improbable...or maybe I have a bias....I don't know I ramble...It's late...])
Okay, I need to sleep.
We can figure out what wonders we need with a little brain power and creativity...
And I'm glad the trade system seemed to be plausible and didn't drive people batty.
Jeez! What is with my freakin' long posts?
And, btw, Watchmen is real heavy. Violent, but very complex.