As far as Linux support is concerned, for anyone wanting to use it right now, I got it running on Mint XFCE 19.1, running 4.15 series kernel. Fired up Lutris, set Wine version to 4.02, used winetricks to install dotnet 4.8, and off I went to design my new dojo! Since Crimson Branch isn't in the app yet, I just left a space for it in the design. To note, thus far I have noticed that the room number limits, energy use, and energy capacity seem to stack each time you load a new floor plan. This results in quickly throwing a room count error even though only about 45 rooms were present in my design. Given that I'm running through Wine, I can't be sure if it's Wine side or app side. A quick thought on wild rotation of rooms, it seemed to happen to me when the room I was using (in particular a dueling room) was roughly equidistant from more than one nearby door, maybe it gets confused as to which door it should snap to then just rotates endlessly to snap to one door then the other?
On the whole, excellent functionality, and a very handy planning tool! Much appreciated for all your work!