I love Forecast view and the ability to set a custom Forecast tag.
But I also use Flags to choose a subgroup of actions to work during a given period.
It would be great to have the ability for Forecast to also show/hide Flagged actions.
I sent in a support request to ask about this and they replied saying there was a request list for this feature. If this sounds like something you would like to see sooner rather than later, please let them know by sending in your request.