Anyways, Agents are USEFUL in numbers, especially spies & assassins(for swarm kill, costly but efficient). And an agent pool, from wich you'd send people in mission directly, rather than from the main map, would be really handy. A newly created agent would go there, as would one agent after a successful mission.

IMHO, if it is legitimate to make armies slow, single individuals can go muuuuuuuuch faster. That simple agent pool - that could be the current agent list, just that some agents would not be anywhere - would allow easier & more realistic management.

Technically, what happens? You create an agent, he does NOT appear on the map, only on the list. You select it on the list, then drag it on the target, as usual. Then everything as usual once the mission is done. Then back to the pool. For static mission, as spying, simply drag it to the province - where he stays.