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Some other profiler, Enerjy or something, has this feature. It allows you to position a frame inside a heap usage telemetry window (for example, around the spot where sudden heap usage growth was registered) and tell the tool "I want to see only the objects allocated within this timeframe". Seems to be useful, and we can likely implement that without any radical changes to the engine.
Not planned for 1.0
Milestone cleanup: future->next