Thank you so much for all the well structured feedback! And also really glad to hear you enjoyed the game so far!
Made a note of almost every point you brought up, the exploration stuff is kinda weak right now, but it's something I'll definitely be improving as I keep working on the game. Building a "lived-in" feeling world with both direct and environmental storytelling for one, as you also described.
Regarding the tool autoswitching, I just remembered I was supposed to add a toggle for that in the settings but it totally slipped my mind as I had delayed the update enough already, but I'll definitely add that in.
The lighthouse hub area floor also wasn't supposed to block movement, but it was caused by a last minute change as well.
Showing the previous plane you were at through the windows is something I also wanted to avoid, but it's a bit of a technical limitation due to web exports on itchio not supporting multithreading (at least from what I could figure out).
And thank you also for your offer!
I would want to take you up on it because while I can manage my codebase (as much of a mess as it is from being a self-learnt gamedev), my artistic skills start with Paint.NET effects and end with using CSGs like LEGO blocks. But I'm honestly just not sure where Wender is exactly heading, and overall not very good with scope/project management so I'm not sure how it would work out right now.