The fact that can now be used as a client-server architecture is a game changer. It will for sure replace many data stacks that now run on many servers with tons of cpu and ram

Yes! And the server isn't really a server, it's still "in process" so it stays lightweight and simple. This is absolutely fantastic.

Being able to put it behind an HTTP service / load balancer and implement horizontal scaling based on resource utilization, or even scale to zero via Cloud Run etc. Drool!