I was just looking at controlling stepper motors with one, and I know that in the past, CTRIO modules have been what was offered for the high frequency output to control them. I know it has the onboard capability, but having it all kinda wrapped up in an expansion module is nice for me to compartmentalize the systems.
The onboard HSIO ability is dramatically more capable than the CTRIO2, and we do plan to put the same stuff into an expansion module. At this point our only question is development priority.
