Thank you for giving my game a try!
Your confusion about the Teleporter is understandable, as it’s a new feature I only introduced a few days ago. It isn’t intended to be used during the early stages of the game and will normally only unlock once the player’s dungeon reaches Rank D.
I made it available earlier for testing so I could see how much of an impact it would have on the game. That’s also why it hasn’t been included in the tutorial yet.
The preset and saved-layout feature is already available, though you may have missed it. It’s located at the top of the Dungeon Plan screen.
You can save up to three dungeon plans, and they will remain available even after you lose a run. For example, if adventurers destroy your Dungeon Core, you can upgrade your dungeon, return to the Build page, and reload one of your saved plans instead of rebuilding everything from scratch.
At the moment, I’ve mainly been focusing on balancing the game, so the UI and visuals are still quite unpolished.
The game is designed as a roguelite, so I’m also not sure whether you’ve tried losing a run and spending the currencies you earn afterward. You can use them to unlock additional trap rooms, along with many other upgrades, including monsters ranging from Rank E all the way to Rank S.