Language support (to power new file (create header?), source file compilation/build steps)
Build system (Currently per-source file compilation for C++. May add Makefile support. Other languages have various systems, each with error/warning detection. May want to add steps for e.g. creating a hpkg in the build process. Also cross-compilation for other systems. (E.g. Arduino) )
Providing extra templates and samples
Source Code Editors (via Protocol to other apps, ideally)
Plugins could be created for:-