Captain Jack! I wonder how he'll fit in with eleventh

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(why not use a chameleon arch to lock away the time lord side and "create" a donna personality that was a perfect copy of who she was?).


I think this wouldn't work. The people who used a chameleon arc in the series returned to what/who they were after being made to remember.

The key to Donna's survival was that her memories were locked away, and if they create a Donna personality that was a perfect copy of who she was as a companion, wouldn't that negate the chameleon arch? And if they create a Donna personality that was based on who she was before she met the doc, that would be the same as what happened, and as soon as she goes on an adventure or so much as sees the tardis, she'd start to remember and the chameleon arch would stop working and then donna go boom boom