@cyberVoodoo - Some of my tips will definitely be familiar to regular coders, but there are always new coders out there who need to know some of our favorite go-to tricks. Hopefully some of my other trips like how to customize search were new to you!
If you want this feature improved in C++ click on the speech bubble next to quick launch top corner of your Visual Studio window and send feedback to the Visual Studio team. They do read the feedback they get from developers.
I tried the usual clicking in the margins and the keyboard shortcut <F9> but unfortunately it looks like right now you cannot add a breakpoint when in Peek Definition. Time for a feature request to the VS team perhaps :)