Items that have an obvious use but cannot be used...

[lordaquarius]

I have noticed that there are some items, whose obvious use for the game is clear: Digital Seminars... Since every NPC you find in stations has basically zero skills, and hiring them do not improve them, it will be amazing if the Dev team notices that fact and allow you to assign those Digital Seminars to NPCs, and then, after a while, after a trip in a ship, after doing something, they become better, increase up to 3 stars, for example... In X3 you could train your marines... If anybody has some other comments or suggestions for this aspect of the game, it will be great to pass them to the Devs...

[Velocinox]

after a while, after a trip in a ship, after doing something, they become better

This is already how it works without the seminars.