It's really fun already, I can't wait to see more! You might already know about this but there's a bug where enemies won't aggro you or leash you if you have over 100 restraints on. So you can just get captured on purpose and then heckle the guards until they get tired of you and set you free, then hop through the whole dungeon and loot every chest freely regardless if you haven't stepped in the room yet or if they're hunting you down.
Glad to hear you like it! I am aware of that bug though it is partly intentional. The idea is that the player poses no threat when they are restrained at over 100 restraint strength which is why NPCs don't care about the player. In the following updates I want to change it so that some NPCs will still want to leash the player regardless of the restraint strength level.
The reason why the player needs to be able to traverse the room while restrained is because the Sub playthrough will require it.