The new bwlimit schedule options are terrific, however you forgot one obvious flag that people might want to use: the ability to stop all transfers during a time period.
For example:
–bwlimit “08:00,STOP 18:00,10M 23:00,0”
to stop all transfers from 08:00 until 18:00.
I realize you could set the limit exceptionally low to accomplish the same thing, but it doesn’t seem as obvious.