Thank you for your question. At the moment, Insight imports both Legal Name and Preferred Name from a CTF or via the Assembly connection. However, the chosen display name within Insight is Preferred Name and Legal Name is only used for statutory CTF exports.
We have passed your request on to our developers as this is something that could be made configurable in the future. We appreciate you taking the time to let us know what you’re looking for — most of the improvements we make come from ideas and suggestions like yours.