I'd loveto see an original condition England too, but as I understand it, all of the modifications made to the class were made for a reason. perhaps it is one dream too far, and is would be a millstone by any modern standards and even if she was made to modern standards while maintaining the cosmetic appearance of the original I'm not sure that she would ever make a serviceable FR engine.
Ironically enough, somewhere like the WHHR or Bala Lake railway would have more of a use for an engine of that sort. Where there are no long trains and tight timings are not so stringent.
Retuning to the topic at hand, it never ceases to amaze me about how much worse you have to make a steam engine look before you can restore it properly