I went to the Ruger page at www.Ruger.com
and looked at all of the different variants of the 10/22 - take down & standard. HOLY FRICKEN MOLEY! Literally, I think you could have a different 10/22 for each week of the year and never ever repeat. And they were still missing some of the ones you see recently posted in this topic.
I think it is only a short time before they offer all of their barrel and reciever combinations in standard, sporter, Manlicher, take down, and tactical configurations. You could pretty much just customize your 10/22 like you do a car at any car site like Ford or Chevy .com. Sure would be cool if they did that!
I think that little Roog 22 has the most diverse product line I've seen in the shooting industry. More so than any AR or shotgun platform.