Sounds like a great plan! Is there still talk of eventually having a way to get rescued from the dungeon?
The biggest downside for me is that once you start getting tied up, you have to immediately find a way out, otherwise you're on a quick path to having to restart your game, making things pretty grindy. This discourages the most fun game component of them all -- the bondage!
Also would love to hear any updates planned on any functionality to be able to do things with NPCs once they're captured, besides just access them in the journal/archive style lookup and bind.