[plt-scheme] Possible improvements to Snooze

Hi all,

I'm playing with some possible additions to Snooze, simplifying the  
way you build queries and access entity/attribute metadata.

There is an example file describing the additions here:
     http://svn.untyped.com/snooze/branches/syntax-experiment/dev/examples.ss

The code is available via SVN from here:
     http://svn.untyped.com/snooze/branches/syntax-experiment/src

I'd like to collect feedback from existing Snooze users:

   - does this solve any problems for you?
   - does it create any?
   - does it break any of your code?
   - do you have any issues that Snooze does not currently address?

If there are no significant objections, I'll work these features into  
the next minor update.

Cheers,

-- Dave