Currently if one wants to compare different alteryx files or different versions of the same file - one needs to compare the XML files. If you are not very familiar with navigating XML, this poses a risk as one may not be able to identify all changes.
It would be a great addition to Alteryx to integrate Alteryx with Git, Subversion, CVS, Mercurial, and GitHub as this tool is becoming the go-to tool for data processing for data analysts and even programmers.
This additional functionality to compare previous versions (diff) and also to merge alteryx workflows if two people are working on the same workflow, and also to easily see what changes have been committed/ made by other developers and when would make Alteryx a much more powerful tool and would open doors to other types of users, as essentially you can run anything through Alteryx.