[Radiant] Combined rss feed and more?

[Martin Olsson]

Hello,

I'm new to this list, I'm new to Radiant, and I'm new to Ruby on  
Rails. I am programmer and interface designer and I'm not new to  
working with a cms - I've even created one of my own that had a very  
similar philosophy to Radiant, but build in java and templated using  
XSLT.

Now I've decided to create my own personal page using Radiant, and I  
love how easy it was to set it all up. I have a few peices left  
before I'm done and I'm wondering if anyone would like to help me out:

1. Should I use Mental? Thanks to Sean Cribbs for the blog post - it  
cleared up most questions, but not all of them.
    Will I be able to migrate my data as Mental evolves?
    What extensions are already released? I want comments and tagging/ 
keywords.

2. I've been tinkering with a hierarchical blog-like structure, like  
this:

smpl.se/
  - rss
smpl.se/things
  - archive
  - rss
  - [posts]
smpl.se/thoughts
  - archive
  - rss
  - [posts]

I want separate rss-feeds for "things" and "thoughts" - which works  
perfectly.

I also want a combined rss-feed at smpl.se/rss that recurses down and  
aggregates all the updates.

My first approach was to just use the sample code provided in the  
styled blog and point it to "/" instead of "articles". This doesn't  
work - I suspect it goes into some kind of loop beacause my server  
goes all huffy and puffy and has to be restarted.

Right now I have glued it together by just hardcoding first "things"  
then "thoughts", but I would like the combined feed to be  
chronological instead. I would also like to be able to add new  
'categories' without having to update the feed page.

Is there some really smart and pretty way to recurse downwards,  
picking out new pages (but skipping stuff like rss and archives),  
creating a chornological feed of the latest new pages on the whole site?

Radiant is looking really good. It seems _almost_ perfect for  
smpl.se, and I'm willing to contribute to making it even better and  
customize it to my needs.

Regards,
Martin Olsson
martin at smpl.se