I like the idea of blind tech research.
Knowing future techs does nothing for game immersion.
"Chief, I have invented this cool new way to build houses. I call it Wattle and daub"
"Yea.., It's good but...
looking at these future techs, I think it would be wise to skip the mud and sticks, bypass the timber and go straight for the bricks and mortar.
Oh, and while your at it, get someone on this 'light bulb' thingy. Its going be a while before this Edison character pulls his finger out."
For those who play for fun whether they win or loose, it would be cool if,
Not all techs were guaranteed.
Certain techs could only be researched by having access to certain raw materials.
A sort of mix between SOTS and CIV.
Optional of course.