good idea, I have added a -p (for path) option for the export of taxonomy with an additional option -mro (major ranks only)
Also, the help message now lists all known classifications.
D
I just noticed that I was probably mistaken in my belief that what you implemented was export of all hierarchies, i.e. including functional ones. (This of course explains why --paths doesn’t work for e.g. SEED export; see my recent reply to a bug report of mine.)
Anyway, it would be very useful for us to be able to use the command line tool to export also the hierarchies of functional assignments.