Here's my feedback from an initial rough pass:

* Provide some references for what a Luneburg lens is. Not everyone will have the same context as you and will need to look up what a Luneburg lens is (like I did), distracting from what your contribution is. Once the context is provided, articulate clearly what your contribution is (which maybe you've already done).

* Provide example pictures of the lensing effect on different (input?) waveforms. The Wikipedia article has some pictures [0] [1], and other references [2], that, while needing context to understand, at least get some of the point across and provide an anchor point for further investigation.

* Have an online demo so that people can immediately play around with it

* Provide a quickstart section that shows how to start their own instance, including the call to firefox/chrome to open the web browser to the appropriate page

* I don't know what's up with that video but it's having a hard time playing back. Further, it takes at least 12 seconds of seeing input field filling and "progress bar" like animations before anything is actually displayed. The payoff should be within 5s (preferably less) of the start of the video to communicate what you want to folks. Technical details of what each field does and how to fill them in can be relegated elsewhere, like in a wiki or 'how-to' doc.

* Have a screenshot of the actual RF antenna being created instead of what looks like an AI generated grid field. Use a screenshot from your application.

* Communicate the limitations of the approach. You're talking about optimizing for SLA 3D printing but will this antenna actual work if 3D printed? Does it need to be out of metal? Some communication about the limitations is fine and, in my opinion, welcomed.

* Discuss some applications or motivation for creating the application (target audience, use cases, etc.). As it stands, it seems like it's very cool but a bit unmotivated

[0] https://en.wikipedia.org/wiki/Luneburg_lens

[1] https://en.wikipedia.org/wiki/Luneburg_lens#/media/File:Lune...

[2] https://www.youtube.com/watch?v=aURuC4Ur84Q

EDIT: added last bullet point