In Excel (see the attached screenshot), right-clicking on the sheet arrows brings up the context menu. Supporting a similar context-menu in Calc would be beneficial as well. Especially when there are lots and lots of sheets in a single document, it's not very convenient to go through all those sheets to get to the right one.
This is an easy hack.
Code pointer is coming later. I'm not familiar with how to get this implemented yet.
TabBar widget implementation is in core/svtools/source/control/tabbar.cxx and TabBar class of Calc is in core/sc/source/ui/view/tabcont.cxx
This has been implemented by Caolán McNamara: https://wiki.documentfoundation.org/ReleaseNotes/4.2#Calc
Migrating Whiteboard tags to Keywords: (EasyHack DifficultyInteresting) [NinjaEdit]