Ask HN: Writing XML Utility - Any Feature Ideas?

I'm writing a little utility that will be useful to me day-to-day and was trying to think about more features that I could incorporate. I plan on pushing it open source to github and sticking it online for free somewhere.

We process a lot of xml file catalogs day to day and I wanted a utility for breaking down huge files into their structure and xsd to easily look through and see what nodes there are, what associated attributes are, etc.

Outside of that, I can't think of too many features to add, but if anyone has ideas, let me know.

I plan on eventually building a visual parser for breaking down the xml files and picking nodes and outputting xml from one schema to your required schema.