Be able to view the Program Member Custom Field in a SL in Marketo

Dear Community, 

We are proposing a feature to be added to Marketo. We have been using the Program Member Custom Fields for some of our campaigns, and it is working quite well. 

However, after the campaign has been completed. When we query a Smart List within the program, there is no way to view the Program Member Custom Fields values in the SL. 

We understand to view the PMCF data, we need to click the Members tab in the program and create a custom view that includes said field(s). However, if we ever needed to run an SL with various filters, then this is not possible to do so. 

It will be great to add the functionality in future releases as it will be very beneficial for campaign analysis. 
Thanks a lot!
Wayne