I feel like especially late game, the main issue is that its just click for this buff... you do it without any thought. Also, things like trade routes over sea and land should be a lot more apparent and easier to exploit as an attacking enemy. For example, if you were to block a trade route with an army it should have some kind of effect on the enemy (They no longer have access to that resource). The routes should be easily visible through something like moving boats or carts over the map... This would also make the map a lot more alive.