I’ve added three new commands to expand the whole tree one level further, expand nodes for selected function further and collapse the whole tree one level up:
New expand and collapse commands
I experimented with expanding not by one level, but expanding all nodes at once – it turns out to be slow and noisy as tens of thousands function calls can be collected and the most interesting control flows start closer to thread’s root anyway.
Runtime Flow blog (Understanding a control flow in a running .NET application) 