but i dont see problems adding it.
The problem in adding a new skill to the game would be, that you need to rewrite the crappy, age-old game engine. This, per se, wouldn't be a problem. In contrast, this would be a hardly needed change in my opinion, but the will of the developers to do such things - this is the big problem here.
Overall i agree, implementing and reworking some playerskills and also tactics would be a nice thing to see. But not gonna happen.