True custom sidebars possible?

Ok, so here's the problem.

I want to create a database with information for the game Destiny. In those guides I want to have a lot of pages where images and information goes in the main content area, and stats and facts goes in a "fact sheet" in the right column widget area.

To accomplish this I need to be able to add a custom widget whenever I create a new post and then be able to edit the HTML for this widget individually on each post.

I've read through a lot of solutions for this, but none of them allow me to edit the widget individually on each post.

Is there any way to do this? It seems like one of Wordpress biggest faults atm.

We are willing to hire someone to help us build such a plugin/fix if there is none around. Contact me if so: thomas@generatorhallen.se.

Thanks!

/Thomas