have their calendar (google, etc) overlay yours?

This will allow them to see when they are actually free and don't have to go back and forth between the two calendars, creating a better booking experience. "

You said "Not yet, we're planning to add this"

Approximately when do you plan to add this feature (I know that things can get pushed back, which is fine. I'm just curious about when you might implement it. Where is it in your list of priorities of features to add)?