It would super cool if you could log debug info from the recipe itself and have that recorded in logdog, ie: have one logdog stream per recipe execution that can contain debug information about what steps ran and why.

Today, we're kinda shoving info like that into sub-step logs. eg:
https://logs.chromium.org/logs/chromium/buildbucket/cr-buildbucket.appspot.com/8924137344740752656/+/steps/package_build/0/logs/why_is_this_running_/0