I have searched the archives here, as well as the Internet, and found some information. For example, many people suggest putting resources into Aard and Igni, as well as Strength, Stamina, and Intelligence. Beyond this, though, I could not find much discussion about how to proceed or how certain types of builds worked for people. I thought I would re-open this topic since many more people have played the game at this point.
So, have people consciously tried to create a certain type of Witcher - genius alchemist, crazed sign user, or well-endowed swordman? If so, what was your experience? Any feedback on where to best put your resources in the early and middle portions of the game? Feel free to share any of your experiences that you feel are relevant.