im 95% sure my engineer count goes up by 3 each time I use the cobalt drive. It doesnt state that it adds engineers just saying 'the cobalt drive spins faster' but im pretty certain I get 4 engineers per day from the drive and lutuma mods rather than just 1.
Your also missing the 4.0 assembly line and, I believe though im not certain it gives crew as mine isnt maxed, the cerulean autosync beams 10 attack boost ability.
Android helmsmen are also not listed in the catagory despite android scientists being listed so they should probably be included