Thank you for the feedback. Custom connectors are now available in Cloud! We are also actively working on improving all the points you raised, speed and stability in particular. A lot of this work is very much in the guts of the platform and does not often make for particularly flashy blog posts.

One more feature that I think is really interesting is the Connector Builder, which is a no code solution that works for many different API use cases. We at Airbyte hope that this makes it easier for folks to build out the custom connectors they might need.