Version 1.5 has been released.
Regarding caravans, there's not much you can do about them=( They are uncontrollable. So, you'll have to hire them one by one and use secondary heroes to manage them.

Since I started talking about caravans, I'll continue a bit. If the caravans themselves are uncontrollable, you can create an indirect solution to the problem. The bottleneck starts because archers don't reach the castle by a couple of movement points. But you can move the dwelling by that distance, shorten the bridge, or even make it wider, a two-lane bridge. Caravans coming from the human castle can be slightly rerouted so they don't get stuck due to a series of gates. Create a one-way teleport in the castle area, cover it with a tent that opens when touched by Nicholas/Stephen. You can create the exact same structure near the ghost dwelling. The main thing is to check the length of the caravan's path so that it doesn't get stuck somewhere.