Hi! First of all, the game's releases should ALWAYS have an "End of Content" screen. If you didn't get to a screen where it's declared that you've reached the end of content, then you've missed something. :)
It sounds like you missed the mall content, as well as the mountain.
The mall content happens naturally in the Daytime at the protagonist's apartment, as long as the protagonist has already met up with Amy.
Depending on the order of events, you may have to go to bed in Verusa in order to trigger it.
To get to the mountain, the player has to have met up with Amy in the park, then has to do Wynne's quest, then has to rest at the Inn afterwards. Jen should say the group can go to the mountain - after which, you can go south of the lake and do so.
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Responding to your numbered thoughts:
1. Thank you! I really appreciate when people show up to say kind and positive things about my game. :3
2. I just thought it looked better the way that it currently is.
3. This has been asked for by some - it's possible that it COULD be a thing at some point, but it would require some work to make it function in a way that's... not broken. :) And there are some other things to consider. Maybe eventually.
4. Hmm, it's pretty fast. Are you holding down the PageDown key while Faster Text Skipping is turned ON?
5. Hehe, you skipped. #5. XD
6. I'll have to figure out if there's something I want to do with that. Currently it does nothing but tell you it's Not Yet Implemented.
7.1 The fully-enclosed room requires the player to use Inspect Area near the south-east corner, then use the Green Medallion (found in the Western Forest) on that corner. ...If you mean the actual locked door, you just use an Ordinary Key.
7.2 I'm not totally sure what you mean. Do you mean outside, or in the tent? The nearby hill does cast shadows.
8. This might eventually get tweaked so it looks more like they're sitting on the bench. We'll see. :)
About your changelog questions:
1. The "picking up Damien from work" scene where the protagonist runs into Amy.
2. The mall hangout might require a day or so of rest before it happens, depending on your order of events.
...and #3 and #4 are both stuff in the mountains.
And finally,
I want to bring up that we have a Discord for the Patrons, and it may be a better place for in-depth conversations like this. XD You should be able to join it from the Patreon account that you paid from.
Thanks for playing! :)