It's hard to say, i wonder that too. basically when defending the castle your pinned down, so really your only able to defend a certain radius around the castle, aggressors would do wise to only enter into this radius if A) they are intending to rush in or B) can find cover along the way. Line of site will be an issue, and other then making a full frontal attack, really only one or two units will be in position to take a shot from the castle.
The castle is all road like tiles, so your constantly getting the movement bonus, the ladders allow you to climb elevation at twice the normal speed, and you will need it, there’s at least 40 elevation levels from ground to top.
The door will take a little effort to break down, but you may notice that it's located in a little cubby which will provide protection from any above attacks. Once you break in though, you will notice from the back shoot that you will enter a court yard which is surrounded with wall and battlements. You will most likely meet melee on the ground floor too.
I plan on adding a back route into the castle that the aggressor can approach without fear of getting attacked on the way, it will just cost a little in movement points.
I also think that we should give the castle defenders control of the "wing clip" glyph.
Having never attempted anything like this before, i could only guess how it will go. From what I read on the public Heroscape boards is that everyone loves the expansion and im sure I would have heard tons of bitching and wining by now if there’s any imbalance. Castles are just like they are in real life, gives the defender an advantage, and any aggressors would do wise to plan their attack strategically, because a full frontal attack (unless you have overwhelming forces) is just suicide. I think though that there should be more attackers then defenders in this scenario.
