Uh- not that I don't understand that sentiment, but natural twenties have never applied to skill checks at all.  They have only ever applied to combat attack rolls and saving throws.  Many people house-rule the natural 20 thing on all rolls, but it's never been printed in a book as an official rule.  IF you want people to have both natural 20 and natural 1 epic results, that's cool...  but just wanted to let you know that it was never an actual rule.