So far using the engine has been a very good experience. The game compiles in ~0.85s after changes (~5.5s clean) and runs super fast. Of course there isn't much happening yet. But that time includes the entire engine and dependencies.

Implementing RTS controls (still 1 unit but should work with multiple already) was also very enjoyable with the current framework.

https://www.youtube.com/watch?v=Z-vOdvKm8MU