Smart tags for auto-tagging auto-updated events

"Smart tags" are tags which get automatically applied to events/tasks based on the content of the blocks title or notes. There could be a section in the prefrences where you could select a tag you have, and add some key words or phrases.

For example, my university timetable is connected through the provided education email, and so I do not have much control over the events. When the university changes my timetable a little bit, the events tags get lost and I have to retag them all. If however, I were to use the "Electromagnetics" keyword for the tag #ECDE, it would automatically recognise that any block with the word "Electromagnetics" in the title should be tagged with #ECDE.

So far, this seems most useful for auto-updating calanders. Maybe you could apply the smart tags to specific calendars where the tag application only happens when the calendar is updated