As with the lead mountain, the answer is yes, of course. Putting historical scenarios aside for a moment, the standard attack/defend or meeting engagements are familiar sights in many rules. My fellow gamers and I have played them time and again, so these classics don't feel particularly challenging any more. Consider historical situations where the lay of the land, the fighting conditions, and the forces available were often messier and far more interesting; contrast that to the standard scenario framework designed for simple pick-up games and for balance.
So how do we get more use out of the generic scenarios when a pick-up game is what we are aiming for at the weekend? Random terrain, events, and such are an option, but we can also take a page from the modelling side of our hobby to breathe fresh air into generic scenarios by combining them into something new. The trick is to bolt one to the other with