Thank you, this is great feedback. What to show and when has been an ongoing convo - we chose to evolve this based on supply side milestones. Keep an eye out for some cool updates :-). We don't yet have the ability to filter by offline-capable, but that's a great idea. Re the dev tab, this is a work in progress - right now a few things are split apart, but we'll be folding everything back together at some point.
Re notifications, 100% agree - this was a major roadblock. The next few years are going to be very interesting :-P