Handles are great, and I agree that their use can help solve or mitigate many memory management issues. The thing is that Handles themselves can be implemented

Handles are great, and I agree that their use can help solve or mitigate many memory management issues. The thing is that Handles themselves can be implemented in very different fashions. I extensively use handles in my own framework, and I plan to describe my implementation at some point, but so far I have seen 3-4 different systems based on different ideas around handles. We might need a more precise naming to differentiate the flavors.