1. This little hammer icon brings up the crafting window. You don't have to scroll.
View attachment 489016
2. You are describing smart cursor, it can be enabled with a button you set up in the settings menu. It's bound to Left Control by default.
View attachment 489017
3. You can push tab by default to cycle through minimap display options at any time to make the minimap go away while dealing with your inventory.
4. You can use the UI scale slider to increase the size of the UI. If it makes the minimap too big, you can make it smaller in the interface section.
View attachment 489019
View attachment 489021