Good question. I’ll post in this forum as soon as I have something interesting to share.
When it comes to the SecureDrop team, I’ll let them talk about plans they may have. (I am only aware of some of it, and definitely cannot speak for them. I’ll ping some folks privately see if they want to chime in at this point of the conversation.)
Also noticing that from post #9 the conversation could be split as a distinct topic. I’d say something along the lines of “Qubes OS-only software: all-in-one-package multi-VM applications”… @moderators 
Edit: also relevant to that conversation: Simplifying Third-Party Installations in Qubes with a New Management Tool - #7 by unman