Galaxy: Data Intensive Biology for Everyone (main site)
Galaxy 101: The first thing you should try (tutorial)
Work through the tutorial, keeping track of where you think subject identity (and any tests you care to suggest) would be useful.
I don’t know but suspect this is representative of what researchers in the field expect in terms of capabilities.
With a little effort I suspect it would make a nice basis to start a conversation about what subject identity could add that would be of interest.