Quotesquestioner No, i just follow development very closely and donate. What you can do as an induvidual, is upvote the relevant feature request on github (not comment something like "+1”)
I'd put the chance of something like this being added at 65% because the foundational work is already there.
Heres a github issue you wanna take a look at:
https://github.com/GrapheneOS/os-issue-tracker/issues/3839
I can't find if there is one for your second question so you might open one yourself.