This is an extremely important feature to me, as I run tennis tournaments that are not held on exact calendar dates, but are held on X weekend of X month for example. This would be relevant for all of the various preparation tasks for running a tournament like this.
Also, my church has business meetings on the 2nd Sunday of each month. another example of this needed feature. There seem to be a lot of people seeking this feature on these forums. I am hoping this becomes a planned feature soon. Thanks.