I really like the idea of Mauku as a feed reader. In fact I already tried to bend it into one by using the feed aggregation feature of Jaiku. But of course all the feeds in your Jaiku account show up with your own photo and name next to it, so it's a bit confusing and not really practical as a feed reader.

But combining Mauku with a web based aggregator would be a really interesting option. You wouldn't have to put a lot of feed handling logic into the app itself, and putting all the fetching and checking on a server that with high and reliable banwith makes sense, too.

The problem with Mauku as a feed reader might be that it doesn't handle HTML and embedded media very well - or at all. This is where a browser based reader comes in. My feeling is that the browsing experience needs to improve significantly from what we now have in Diablo in order to be able to compete with native apps such as Mauku. For example, I think that this is an area where kinetic scolling actually makes a lot of sense.

The other option to a pure-browser based solution, or a firefox-addon as you suggested, is to embed the browser into a native app. PenguinTV does that, and I've tried it too with a little app I wrote. Unfortunately, embedding the mozilla engine in a python app is not very easy on maemo, as using gtkmozembed gives you an non-hildonized browser component without on-screen keyboard support or drag-to-scroll. Providing better support for embedding a fully hildonized browser component into apps written in high level languages such as python would be really valuable, too.