I was thinking of moving Katherine to a later fight and switching her out for Puru or someone like that. While I have an arc planned out for Kathy even if it would be hindered by her absence. I found out having Katherine Williams and Katherine Winner and Catherine Baker all in one ship may lead to confusion.

There's also a plus fact of having two Sandrocks (in this case Katherine would have XXXG-01SRL Gundam Sandleon) may be a bit much and introducing a character from Mars Century could be a bit much all at once. It also may alienate Paul's crew what are the odds of such a meeting happening? The only new crew would be Aker joining.