Hello there,
1. This is not something that is planned to be implemented as the game has a division for the cgs in good segments and the cgs would need to be reworked to be seen bigger, otherwise they wouldn't look good when increasing the size.
2. There won't be a gallery, if one is done, it will be only for unrepeatable scenes.
3. Dialog is set to be speed up with the speed up button at the top, there is also a shortcut but is currently not working.
4. The game works in a way that wants the players to discover things and not treat it like a list of things to go through, ofc characters have their designed spaces, like Tasha's shop or other npc's houses.
5. The delays are in place to minimize breaking the game because of fast inputs, which can also cause events to break.
There won't be animated scenes, as advised before it's a balance between a full patch update vs 2 animated scenes every couple months.
The starmaker models are raffle winners designs that got implemented into the game and are not interactable, with the exception of Celeste who is an actual story character.