I was getting this odd, Fanfiction Rants vibe, so I looked up who Iris Wildthyme is supposed to be.

Then I realized why.

Main series character gets equivalent parallel character.
Adventures parallel the original adventures, but better.
Really her adventures are more true than the original character's.
You ought to love her far more than the original character.
She even has a fancy name.
Unusual companions - more so than the original character's.
Eventually she's better than anything from the original stuff.

*sigh*