I've solved the outpost issue

The issue is that no one uses them until like late castle age. This is because a single outpost means you can make two TCs when you get to castle. Or, of you do make two TCs then you can make a single outpost until you mine stone.

The solution is to make outposts a drop off point for resources (or just stone) upon completion of the building, much like a farm. So in Dark/Feudal age you can send a vil out past your stone, pick up 10 stone, make two outposts. If you're walling anywhere near your stone then an outpost would be a no-brainer. You could even up the stone cost of outpost back to 10 stone to balance the buff.

Thoughts?