It's a trade off definitely. The way I think of it is, how often would you have to sub? Rarely. Since most uris do not have spaces, and even putting a URL in an

It's a trade off definitely. The way I think of it is, how often would you have to sub? Rarely. Since most uris do not have spaces, and even putting a URL in an address bar will usually sub it. On the plus side, having a simpler syntax for URLs I feel is more readable which is great for ease of use. I think ~ looks like a link, and @ makes sense semantically. But to be sure I think the legacy syntax could remain as a fallback / alternative. New syntax is something that could be tried in a flavor.