Nope, it's fine and I changed it to Gatomon. I think my main thing was I wanted to go with something slightly familiar, yet different at the same time. I can easily make the character and her Digimon work with Gatomon though, so no worries.
Hey Alby, just wanted to let you know that, although I like D'Arcmon as the Champion, Kiklion thinks it better to change it to Gatomon. She thinks you're putting too much hassle into keeping it the same, but different at the same time.