Thanks for the anon comments that came in via the feedback form! I'm guessing they came from here.
I've deployed two of the suggestions:
1. don’t show unavailable (now hidden behind a button at end of list)
2. be able to specify which tlds are included
These changes are now live. The other suggestions around advanced options will take a bit more time/consideration.
I really like this concept! I want to help if you are open to it? I am looking for design projects to take up, so I could provide you with a polished Figma design for this and in return, pay me whatever you think the design is worth. If you don't like them at all, then no pressure to pay anything! And if you do like it, it may really help with selling your vision, presenting it to get validation, showing investors, or even just to better visualise and refine the idea itself.