Frequently used menu's that still have no key bind setting available (Blank by default, or otherwise):
- Vehicles Menu: For placing ramps and barriers, often
- Forestry -> Trees Menu: many trees, many times
Frequently used Tools That are missing/could use key bind:
- Remove Surface
- Paint Surface Menu
- Edit Tree Designation
Frequently Used Vehicle Interface options, that could use a key bind:
- Move Vehicle
- "U" for unity remove cargo
- SHIFT/CTRL + U to unity recover
Other less-frequented Menus missing blank key bind settings (useful while doing specific large-scale projects)
- Production
- Smelting
- Water Extraction
- Food Production
- Power Production
- Crude Oil Refining
- Waste Management
- Buildings
- Housing & Services
- Cargo Docks
- Bridges
Most builder simulation games just add every menu and leave them blank for players to decide if they want the added complexity and memorization. And for some it's an accessibility feature to help with repetitive mouse mouse movement. I just like using both my hands to build things.