Meanwhile, @Yolan, you might want to try to scratch that itch with Sid Meyer's Covert Action; it's an oldie, but that, roughly, is the description of what you do most of the time.
Thanks for mentioning it. The wiki was quite interesting actually. (
http://en.wikipedia.org/wiki/Covert_Action). Sid Meier derived a design rule from the experience "Don't try to do too many games in one package."
While I'm here, another game idea..
A survival-style game with eating/resource gathering, but rather than being alone you are responsible for a tribe. They can hunt themselves, but aren't so tough and need your help to survive in a threatening environment. The tribe members will reproduce and raise their children, and the surrounding environment responds to your activities with some ecological modelling and enemy tribes to fight. Can you lead them forward through a basic tech tree and establish a secure home? The tech tree is maybe a deeper exploration of the initial stages of a civilization campaign. Woohoo! We have pottery! But if you want actual pots to increase your food storage, you need to set aside an area for your guys to make the pots in, and lead them to a clay source. And watch out for that sabre tooth tiger.