I love Sandstorm.io, but each instance seems to act as an island of users / apps, by design. ...I wish it had thrived enough to have Federated Apps integrated

I love Sandstorm.io, but each instance seems to act as an island of users / apps, by design. ...I wish it had thrived enough to have Federated Apps integrated with it intelligently. I love how the App Store works on Sandstorm.io and in Linode (for initial set-up, anyway). I also hope that this stuff gets integrated with something like Tailscale... So if I run an instance, I can see which individual users or apps on other instances are allowed to talk to my apps on my instance, and it's all end-to-end encrypted... I continue to hope for the fediverse to do well! And yes, people will subscribe to Allowlists and Denylists, and that's not great, but people are terrible...