I moved from Los Angeles to Hong Kong about one year ago, but forgot
to change my time zone setting. Now, I have multiple calendars set
within the LA time zone, when they should in fact be in the HK time
zone. Since I travel quite often between the two cities, it gets
frustrating. Wouldn't it be great to be able to select certain
calendars or dates and shift them all to the correct time zone?!

On that topic, wouldn't it be great to be able to view, in list
format, all of your recurring events? That would certainly make
selecting which events to "bulk time zone shift," for lack of a better
phrase.