Siege

Hey i was wondering if siege upgrades are likely to become available that don't involve knocking down the defending players walls or town as this is strategically limiting and unrealistic afterall a wall with a large hole in it will offer very little protection but would be easy to fix after an attack.

Some options would be:
                                      siege ladders that reduce wall defence and perhaps actually required to allow infantry to  attack cities with walls greater than lvl 10 say 1 ladder for every 100 spearmen/swordsmen (swordsmen attacking a high, defended wall with no way of getting up is silly)
                                      Battering ram: gate will need to be rebuilt (separate from wall) and is required for cavlery to attack, greatly reduces defence against cavlery and infantry. infantry are required to operate
                                     Siege tower similar to ladders but far more effective and perhaps required for level 20 walls.


I know this would be a lot to implement but would open up a new element of warfare and make it more realistic