I'm a big fan of your system, especially the physical exploration feature. Among all the journaling game mechanics I've experimented with, this really distinguishes itself, in addition to being super fun!
I've recently released Heart's Haunt, using your framework, and had a great time tweaking the numbers to achieve the desired difficulty level. A huge thanks for all the resources and guidance you provided! I'm already conceptualizing another game inspired by carta, with a focus on interdimensional travel, bearing a distinct Cronenberg-esque vibe. I hope that's alright with you?
I just finished it, it's called Warp-Morph. Thank you for sharing such a fun system!