Matomo is a pretty high standard of comparison, haha. So, thanks! Long term plans is to turn this into a self-hosted, single-binary Firebase alternative of some sorts.

For example, current features in testing are things like funnels, AB/N-Tests, etc. Then extend with any features that allow direct engagement actions for active users.

EDIT: another benefit might be performance of Go over PHP. But that may only show if you plan on hammering the service.