It would be useful if LibreOffice could have a responsive layout.
An initial implementation could be determining the icon size based on the window width. Additional tweaks could include distributing space evenly across toolbars on the same row and expanding onto a second row if there's not enough space for the toolbar.
Reasoning: Same as with websites. Large icons make sense with a large window size, as the cursor has more distance to travel and larger icons make better targets, or on a tablet. However, with smaller window sizes, small icons are needed to keep commands on screen and afford more space to the document.
Operating System: All
Version: 18.104.22.168.alpha0+ Master
This sounds like a good enhancement request but it'll require a ton of work so, as to when it will get done, I'm not sure.
Low (quite difficult to implement)
Making an Easy Hack from this - for the code pointers, please check
adding LibreOffice developer list as CC to unresolved EasyHacks for better visibility.
see e.g. http://nabble.documentfoundation.org/minutes-of-ESC-call-td4076214.html for details
Migrating Whiteboard tags to Keywords: ( EasyHack DifficultyInteresting SkillCpp)
JanI is default CC for Easy Hacks (Add Jan; remove LibreOffice Dev List from CC)