Definitely, I'd love to import ships into Privateer some day as well :) From what I remember, the format is pretty much the same, or very very close, so I think it would be trivial to adapt this script to import new ships into Privateer! (the palette needs changing, the packaging might need some tweaking, as Privateer started using IFFs for ship encoding, but the RLE compression used by the game is definitely the same) If anyone wants to do that, do let me know!
Anyway, doing some progress here cleaning and optimizing the script. I've been using MATLAB for my work, so I had forgotten how slow GNU Octave is in comparison. The way both programs handle for loops (very slow) means my script was never really blazing fast, but Octave has gotta be around one order of magnitude slower than MATLAB! So I'm attempting to vectorize my code in a couple of functions before releasing it. (for context, Octave is kinda the Open Source clone of MATLAB)
In the meantime, I've been playing a bit with the Arrow. If anyone wants to suggest a set of stats, please feel free! I'll incorporate them in the package I'm building. Screenshots below :)