Now, don't get me wrong, your trick is very clever and I can see it as being very useful! But it's still going to be difficult for beginners to understand,
I do not get you wrong at all. I gave the Direct example (Fig.1) how to Delete in one step unwanted events but this is not my style - just technical info according to my skills and the OP question...
My MAIN IDEA of showing the additional "Non-destructive" methods was to show how to Temporary block "Unwanted" data and to keep it as backup! The unwanted Midi Data is FAQ and it was a good idea to share that tip.
Fig.2&3 method is just new non-destructive method which requires two custom Transform Templates. Please try to understand - it is similar to the most of the factory Transform Templates (the people do not try to understand the settings), they just use them ! Following the picture (diagonal lines or Meta Status is not difficult at all when they are shown in the picture) that's why I decided not to add song attachment of the templates (this may injure the people I guess).