Yeah but now that I think about it Ruger makes ARs now which surely have a lower unit cost and higher profit margin. So updating the Mini 14 would probably take some sales away from their AR. Short answer here is I don't see them doing it.That would pretty much be brilliant.
Either that or Ruger could update the rifle to accept AR magazines and call it a Mini-15. They updated the PC9 to take Glock mags, so who knows?