My names not jack but it does start with a J.
My 2 sats…
1. I like it. It’s well done and clean (though I wanted to know the prices before I signed up which wasn’t on the page).
2. More importantly, my suspicion is that it’s probably too early for most Nostr users to actually understand or want to use something like this. As adoption grows though it will make more and more sense as long as we have tools that continue to encourage users to know what relays are and why they use the ones that they do.