Howdy!
Generally: Use the save menu to export a save (Download to device) from the old build, then import it into a new one (Upload from device). If there's an error message, it means the save is incompatible (Very old/corrupted).
Howdy!
"In orbit of Na'Ja" refers to not being physically on the planet. Since the planet is blanketed in telepathic noise, if you read the messages while on the planet, your character perceives them differently than if they're somewhere else.
Dionysus Core does have some mail associated already, mostly when you bad end on the planet.
Howdy!
The issue with adding weight dynamics to the game is that it would massively increase its scope, require variants of hundreds of scenes, etc. There will definitely be more weight-gain content, and blueberry stuff is absolutely planned, but they'll be relegated to La'ard, just so it all remains manageable to develop.
In the future, though, I want to work on a project that explicitly does away with these "content islands". They bug me quite a bit!