Not only have I not seen the important stuff as rewards (such as suit and weapon schematics), but the rewards tend to be very minimal, such as just 1 single item (that I assume can be bartered to be a few), while the missions from the terminals typically give you at least 10 (very rarely well below that).
By the way, this is the first time I have been doing these Odyssey missions from the concourse terminals. They are rather different from the typical missions you get from the station's mission menu (which you access from your ship). I didn't know that these missions existed. (Or, perhaps more precisely, I was aware of Odyssey-specific missions being not just on-foot, but different from in-ship missions, but I didn't know much about the details.)
It's actually a nice change of pace. I'm not very fond on killing security guards who aren't criminals/wanted, but eh... I suppose I can do those only if I'm desperate for a particular material and there are no other options. It's more fun to do the fetch missions where you need to stealthily get a sample from inside one of the buildings, or from a crashed ship. Or, sometimes, you need to track and hunt down a wanted criminal. (Sure, these missions could be much more involved and longer, but I suppose this is better than nothing. As mentioned, a nice change of pace compared to the CGs and colonization hauling.)