How can I make custom write pages with more than one tags field?

Hi folks.

Searching on new ways to use WordPress, I want to try it in a games reviews page.

I have the idea to make some new fields to put some of the data for the reviews like style of the game, platform, developer, score… I tried it with the Custom Write Panels plugin, and it works perfect at first. But I think on people who wants more interaction with the data. Maybe, one user wants to view more reviews from games, for example, developed by Sega, or launched on Super Nintendo/Super Famicom.

So, I want to replace the custom fields boxes of a write page with a new tags fields, and I don´t mind of get rid of Custom Write Panels plugin.

To explain myself, I prepared some images:

• This is the first one, from my WordPress.com blog. The default write page we all already know and love (but in spanish, sorry). There´s not any modifications, and I put it here only for illustrate my question.
• And this is a mockup I´ve made to show you in some way what I want to do. You may noticed the new texfields, like the custom fields boxes created with the Cutom Write Panel plugin. But I don´t want them to be custom fields, but tags fields.

I want, instead of put all the relative data of “Style”, “Platform”, “Developer”, “Publisher”, “Launch year”, and “Score” on the main tags field, put each data in their field, but still being normal tags, so the users can click on them and navigate the tags page like everyone can do with normal tags.

Also, I need to show each of those tags outside the generated tag list (the one show with <a href="http://codex.wordpress.org/Template_Tags/the_tags">the_tags()</a> ), and display them in a specific part of the post, like the use of <a href="http://codex.wordpress.org/Using_Custom_Fields">get_post_meta()</a> with custom fields, but with tags.

If someone knows a way to do this, or smething like that, please help me. If you need more examples to understand better my need, only say it. I tried to explain my need the better I can. Sorry for my poor english.

Thanks a lot for your time.