Before stumbling upon this tool, I've spent a lot of time tweaking SVP paths in "mostly manual" files in other projects, it's a recurring theme for me. I was delegating the more interesting paths to Inkscape or similar, but keeping the basic structure handwritten. This tool would have made my life so much easier!
Well and I can eat the cake as well, make it some native app that has proper performance.
This is open source, so whether or not it's a web app should make no difference here
PS: This submission of mine is at least a day old, but it now shows as posted about 3 hours ago; I presume this is because it is from the second-chance pool.