The most useful vim plugin for C++ coding, in my opinion, is vim-rtags, which utilizes clang-backed rtags. Rtags parses code, builds index for precise navigation.

Rtags is accurate, if code compiles. But it will fail with preprocessed code bits. For instance, if there are separate pieces for linux and for windows, only one of them will be compiled at a time.

The feature, which impressed me the most is “rename symbol under cursor”. That’s already a feature of IDE: refactoring.

Note: to reduce SSD wear I tend to use tmpfs for transient data everywhere.