Expanding on Bug 1074586, possibly done as an addition after the easy part. The idea would be to add a score to the bug_interest table. Bugs that you are involved with and have had a "change" are scored 1.0. Bugs filed in watched component get 0.7 bugs that are related (depends/blocks) to interesting bugs have 0.5 * $x, where x is the score of the interesting bug. This has a complexity cost, but the value is for very busy developers being able to sort bugs based on another metric. The idea could be expanded where bug_interest is related to its importance or priority.
Summary: Idea: Bugs of Interest with scoring → Bugs of Interest with scoring
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