Would be cool if they were organized in weekly or monthly folders 
That’s something we could do for version 7. What makes more sense: organized by the date they were archived, or the date they were submitted? The nice thing about the latter is that if you archive, import, and then archive the same job, it will stay in the same folder.
Yeah makes more sense!
+1.
I would go with an option to organise archives either by Submitted Date or Completed Date, as being probably the 2 most useful timeStamps that people will want to control the archiving of data by.