I think there’d be a lot of demand from long time engineers that loved working in flow state to build tooling that encouraged flow. I think tokens/s needs to get like 10x faster first, because you’re going to be heading into a world where you are receiving very soft and non-distracting suggestions, probably at the periphery of your consciousness. Most will be thrown away.
I can kind of imagine a UI for this. I might experiment a little building something, but it will be by telling some agents to build it.. :)