Support simplified UI for multiple whitelisted domains

Hi,

First of all many thanks for maintaining such a useful module! I'm working on a project where I might be required to simplify whitelisting multiple domains for non-technical site admins by providing a simple text area where each line is a domain (no regex magic). I appreciate you may want to keep the core module lean and cohesive, but just wanted to check in and ask if there would be any interest in something like that living inside the module?

Thanks for your time!