You are focusing on the consumption side and your proposed steps seem like a good way to bring back easy consumption of RSS feeds. But the problem lies elsewhere: the blogs I regularly visit still have RSS feeds, but most content now isn’t in blogs anymore. For-profit sites have crippled or completely dropped their feeds to make users see ads. Many people that would have been bloggers a decade ago just publish thread…
My hope is that the one would follow from the other. If consumption is easy and awareness better, creators would want their content available via a feed. Think Youtube: With ads integrated into the videos every feed subscriber is a money source, both for the platform and for the creator.
I know a podcast I like but never listen to it, because it's behind a strange podcast platform without a feed. If they had that they had at least one listener more, and more listeners would mean more potential for advertising. Simple awareness could help here.
Also, I think it's somewhat of a misconception that ads are impossible to add to feeds. The article itself can contain them, the feed can even have special ads, there are no rules against that. Sure: We are talking static ads like banner ads, not Javascript-tracker-driven dynamic adspaces, but that's a direction the web should go to anyway. There has been technology and industry in that direction in the past, why shouldn't it exist again?