Duress PIN/passphrase/fingerprint
This is being heavily worked on already.
Amnesic profiles
You'll need to explain what you want in more detail.
Working fingerprint after switching profiles (this one's on AOSP, but hey it's a wish list)
This works already.
App scope (most notably to have gplay installed and chose access to in on a per-app basis instead of having different profiles to do the trick)
App communication scopes within profiles are planned, but for now profiles provide it.
Mic/Cam/Location access auto turn off (sort of like app's "only this time" feature)
This wouldn't really work since apps would keep it active if they were using it.