Maybe browsers could be configured to automatically accept the first certificate they see for a given .internal domain, and then raise a warning if it ever changes, probably with a special banner to teach the user what an .internal name means the first time they see one

Godot’s 3D is perfectly usable in my experience, it’s been a while since I’ve used Unity though so I can’t tell you how they compare.

How is this better than a normal messaging protocol like Matrix? What does blockchain add to the solution?

Would be an excellent change if they replaced it with a chronological timeline, but we all know they won’t do that even though their backend already generates RSS feeds and it would barely take any effort to integrate with the frontend