IMO sieges are the worst part of empire total war. They've never been a strong point in the series but i gotta say these are the worst. Is there anything that can be changed to make them harder eg making bastion cannons explosive so they do more damage, increasing range of musket fire from the walls, removing or making the abseiling stuff harder. I know a proper siege engine was probably abandoned early in the development because of time constraints but at the moment a fort is essentially useless which is a real shame and prevents using them effectively in your strategy.
Anyway - are any of these above changes possible for IS?