Good to see different takes on the future of Agenda being discussed. I don’t think it has to be one or the other. Further improving Agenda as a capable To Do’s manager as suggested by @stevew has been on our roadmap from day one, which includes things like the ability to create overviews of unchecked items, better list display and management options, etc. So we’re definitely not done yet 
At the same time, @stedmaniv is right that it’s not just about the app needing to be expanded or changed to fit an existing workflow, but also about tweaking your workflow to optimally leverage what Agenda can bring already today.
In that sense our overall goal is to give you the building blocks to optimise your workflows rather than providing a single complete and definitive solution. This is also exactly the idea behind this talk section of the Agenda community, to discuss with and help each other leveraging these building blocks.