I'll keep it short:
- Really good renders.
- An interesting and cool concept.
- Well-written dialogues, both in terms of written English and in making the conversations believable.
- There's no sharing right now, but switches for it are already in the game.
- It's nice to see a sandbox that isn't useless and a game would be much better as a VN, making the game boring and tedious. Instead, it's one where there are systems that both justify it being a sandbox and are pleasant to play.
My only suggestion after playing the intro would be to include an indicator for new scenes in an event.
It's not a huge bother at this point, but if they stack up with updates, it could become a problem.
Even if it doesn't happen, it's always nice to know where to find the new content instead of going there, checking, skipping if there's something new, and checking all the options.
Ren'Py keeps track of seen events, so I guess it shouldn't be a big time consumer.
Even then I think it's worth it because from the player's perspective, it makes the game much more enjoyable to play.