KSP Transfer Illustrator

I've put together a slapdash (even more so than usual) prototype for an orbit propagator app. It's separate from the transfer-calculating app for now, and might stay that way to prevent things from getting too cluttered. https://ksp-trajectory-illustrator.herokuapp.com/ You can enter a custom starting orbit, and then a series of maneuver nodes (each with prograde, normal, and radial burn components, as well as a universal time). The app will propagate the orbit across SoI changes, apply maneuvers at the specified times, and display the orbits in each SoI. There's a sample maneuver node already set up when the app is loaded. I haven't really done any accuracy testing for it yet, and I still need to add in things like the download buttons and sliders that are in the other app, but it should be functional at least. It's rather "dumb," since it won't tell you anything you couldn't figure out by placing maneuver nodes in-game, but my hope is that it could eventually be used for generating plots for use in tutorials or for sharing cool mission plans. It would be interesting to see how it works with a crazy multi-gravity-assist type mission. Feel free to offer any suggestions!