VDZ wrote:Raids against major factions would be near-impossible, or at least definitely not worth the effort. You have to build a lot of catapults to deal decent damage to the shield, but leaving them out in the open for 2-3 hours means there's a HUGE risk of them being destroyed. And they're pretty expensive to build.
Agreed, you would need a ton of resources and the defenders have all the initiative in the fight.
The attackers will need to maintain their numbers and be on their guard for the entire duration of the siege. The defenders on the other hand can engage battle at any moment, using walls for cover and call in as much backup as they need to. In other words, the level of organization and no-lifing required to pull off successful raid means you basically need a faction full of autistic unemployed basement dwellers with no real life obligations (its a bit like a high level WoW raid in that regard). Wizards immediately come to mind but I think even they will struggle because raiding is like sending a signal to all your enemies saying "we are out in the open, vulnerable, with red handed, come get us" and they sure do have a lot of enemies.