[support] Is this achievable using drupal alone?

[Neil: esl-lounge.com]

I have quite a specific content-type requirement for my site and have been pulling my hair out thinking about how I could achieve it with drupal - so I turn to this support list, if not for a solution, then for at least a pointer or two to push me nearer an answer.

I have a site where I want members to be able to enter information about hundreds or even thousands of cities. It's not relevant exactly what type of information they are writing.

For example, a member creates a new X content type (this is the big question) and puts the title Dallas, Texas and writes a paragraph or two about it. Other members can rate that entry or attach comments to it...or, very importantly, add their own entry, which would have equal weight to the first entry. Ultimately, tags could be attached to each entry to allow some type of sorting.

Look here at a screenshot mock-up I've made to give some idea of what I'm talking about.

http://i31.tinypic.com/2lo0qkw.png

The original idea called for a wiki where each city would be a wiki page, but we're now veering more towards having seperate entries (not editable by other users) by each member, to which comments can be added. So these are almost nodes within nodes. We considered some type of views/og solution but is it feasible to have 10,000 views or groups? Would views allow me to gather together, dynamically, all "entries" on "Dallas, Texas" and seamlessly switch (using an auto-complete text box perhaps) to Houston, Texas or to any of 10,000 other towns? Would $arg help me there??

Is there anything that already exists on drupal that can help me towards a solution? I've already thought about book pages, forum pages, groups for each city and a few other possibilities besides, but nothing seems to fit. There could well be some useful modules out there I am unaware of.

Thanks in advance for any guidance you can offer.

Neil
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