The titleview is amazing and the only idea I have to improve it is to let it only vanish if the entry has body. There are many feeds which only provide the title.
It would be nice if it were possible to use the shortcuts for refresh and fetch in the itemview.
And somehow its not possible to use the zoom it only vhanges volume. Maybe it would be better anyway to select a fontsize in the settings.
These are my ideas for now. You are doing a great job!