Hi there! This looks like an excellent next step to PTU, I'm excited to see someone else come along to pick up the torch.
I think my own tabletop system might be mentioned on page 4? Something about a project with the same name that died in 2023? I'd actually like to revisit it and give up the name and maybe speak with you about how you developed your system. Your PDF looks much nicer than my scattershot, WIP website!
Let me know, I'd like to get in touch. :D