I use a secure portal and put up the whole return and but also put up the signature forms [and my invoice] separately.  The issue is that they simply email them back to me which isn't safe.    Some of my clients have over 10 states and if they had to sort through the whole client copy for which forms to sign would be unreasonable.

This is not a hard programing issue. just on the print form screen put the option to mask like it has on the print entire return screen.  Also the print ef option prints fed and states without having to do it separately.