Great to hear the feedback.
Re: Domains, I've always thought of this as sort of an antipattern from a pure technical perspective, especially with things like serviceworkers which really scope to a domain, but always willing to continually have this conversation.
On that note, we will be open-sourcing our code and have the theoretical notion of a decentralized-but-compatible web of similar platforms. We don't have any designs to go too hard into this arena on day one, but it's an idea we're keeping around as a strong possibility.
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