This app was mentioned in 9 comments, with an average of 4.33 upvotes
Have you seen the Google I/O app? It has a lot of the same interactions as your app does.
Just my initial impressions looking at some of the features, you should combine many of those features.
Speaker bio, surveys, ask the speaker, voting, slides -> all condensed into buttons in the talk's specific agenda listing. This would also improve UX because your users wouldn't be overwhelmed with features while still keeping it functional.
I'd imagine there are many other work flows that could be integrated into single views as well.
But seriously check out the io app, it was made for Google's Dev conference which seemingly has a ton of overlap with your app.
Never heard of the terminology "scrim" before, but I think I know what you're talking about haha.
Tbh, I think it's to maintain comparability with older apps. For example, if they didn't have the black bar, the pill might overlay on-top of some app's UI unintentionally. However, for developers, there is a new setting in Q to make the nav bar transparent so it looks much better. You can see how it looks like in the Google I/O app. It was a similar case when 18:9 displays came to Android and older apps were still letterboxed in 16:9. Sooner or later, when more and more apps get updated for Q, you should see that black bar less ;)
Keep in mind Google has their own I/O app, so you're better off making an icon that looks nothing like what their app is like.
https://play.google.com/store/apps/details?id=com.google.samples.apps.iosched
Direct play store link for those who want it.
here's mine.
also, the Google Play screenshots also show it being transparent
Google I/O app does not seem to have been updated yet. Still referring to 2018 event.
https://play.google.com/store/apps/details?id=com.google.samples.apps.iosched