Things end users care about but programmers don't

Change color of things
Nice default color palette
Use my preferred color palette
Use this color from here
Import/export color themes
Some words or identifiers should always have a specific color
The same thing should have the same color everywhere
Good contrast
Automatic contrast of text if I pick a dark/light background
Automatically generate color for large number of items
- All the colors should belong to the same palette
- Don't generate colors that are hard to tell apart
- Don't place similar colors close to each other
- Don't use the background color on things

Integrate with system accounts
Use accounts/permissions from Active Directory
Import from Excel/CSV
Import from email/email attachment
Export to Excel
Export to PDF/Image
Record a short video
- As a GIF
Send as email
- Send as email periodically
- Send as PDF attachment on an email
Import/attach images
- Crop before upload
- Compress
- Change Format
Use image as background but stretch the right way
Notifications on the app
- On apps on my phone
- By SMS
- On our systems
- On my mail

Good error handling
Good error descriptions
- Translated error messages
Tell me what to do to solve an error
Tell me what this does before I click on it
Support touch gestures and mouse
Keyboard shortcuts
- Customizable
Undo everywhere
Multiple undo
Recover deleted things
Ask before deleting
Copy and paste
Templates
Detailed and up to date guides in text with screenshots at each step and highlights
- And in Video
- Screenshots that stay up to date as the product evolves
- That are in sync with the version I'm using
- That adapt to my custom setup
Up to date and detailed documentation
Translated to my language
Sorting everywhere
- Natural sort
- Sort by multiple criteria
Filter everywhere
- Fuzzy filtering
- Case sensitive/insensitive filtering
- Filter by multiple/complex criteria
Track what is used where and warn me when deleting
Optional cascade deletion
Native and simple date picker on every platform
Sorted lists/selects (by the label!)
- Natural Sorting
Dropdowns with filtering but that behave like the native controls
Preview things
Consistent button ordering/labels
Consistent capitalization
Progress bars for slow/async operations
Responsive UI during slow operations
Disabling buttons during slow operations
Handling double clicks on things that should be clicked once
Clear indication of what can be clicked

Colors