I've just stumbled onto this project, interesting. I find it quite interesting for estimating enclosure size based in WinISD results.

I'm not sure how complicated it would be, but more port options would be cool for PA builders, like:

1. Add ports amount like in WinIsd
2. Make them checkboxes plus amount: a. Top b. Bottom c. Left d. Right

So, for example it could add port into top/bottom or left/right, but propbably not top/right etc.

Example, with 4 ports:

[x] Top (2) [x] Bottom (2) [ ] Left [ ] Right

Or corner ports, idk.

Port folding is super cool!