The fact that you can filter by registry makes this tool very useful when looking up multiple Tld's at once! It is great if your not familiar with some tlrdns or they're located somewhere out-of normal reach (like Antarctica).
Having all names entered into an index format like domaiIndex allows me as well has other team members access them anywhere without having tons more tools necessary just because it could be accessed from any device/place we have internet available via mobile devices etc., If I'm searching through my personal account only then there aren't much features missing but would love additional search filters such as date range too!! Would also prefer ability add custom fields so users donwload file directly off site instead than being required download app first which takes time away form main work flow process -.-.