Add an "is any" and "contains" option for the lead contraint field in the "Member of SFDC campaign" filter. Our business needs to be able to create smart lists that filter out leads and contacts who have been added to any SFDC campaign. We have over 500 campaigns in SF and are continually adding more so the workaround of adding OR statements for every campaign would be very unmanagable. All of our campaigns are training events so if you've been to one, you've been to them all - hence the need to filter based on any campaign. Thanks!