If you and your companion have multiple moddable gear, getting these extra com's helps keep both of your gear up to date. This makes doing the next planet easier if you solo a lot. Just doing the normal quests will not keep you and a companion updated for 2 or 3 weapons and 8 - 10 pieces of gear. For example, keeping myself (shield tech) and Mako updated, i can solo heroic 2+ shortly after getting to a new planet. I'm not saying it is easy but makes it a lot more doable.