Slash Notation While Keeping Playback

I arrange several jazz charts, and this entails frequent use of slash notation for comping or soloing. My method for slash notation is to switch to a separate voice, put in 4 quarter notes, make them stemless, make the head a slash, and uncheck the "play" box in inspector. However, I like to have an example or just something to fill in the sound for playback, and I do this by having whatever part written in and just making all of the pieces invisible.

However, there are 2 issues with this process. The first is that in the individual part, not everything goes through, usually the slashes still play and any ties or beams are still visible. If I do it initially from the individual part, the same problem occurs but this time in viewing the whole score.

The second issue is that if there are two solos over a solo section and for whatever reason a repeat isn't practical, copy and pasting the bars from earlier will always leave the ties and beams visible.

These 2 issues being fixed would be helpful, but if you could implement some sort of automatic slash notation feature, especially one that could leave previous parts playing but invisible as I have, that would be ideal.