tech broker upgrade

As the title says, it doesn't cost too much time or resources to go for the Guardian data at the ruins and then exchange things with the tech broker but, is still worth it? Engineered stuff seems to be better at everything without maddening Targoids, Experimental weapons seem to be useful...

I think that tech brokers need an update, mostly in who stocks what, as right now it does not make a ton of sense. The main addition here is making separate human and Thargoid tech brokers, though there are a few other items that I suggest. Any one of the following items could be added...

It would be nice to have scan resistant passenger cabins. either as a tech broker or engineering upgrade. because in my experience when you leave a station or return to dock I always get scanned by npcs making it next to impossible to complete passenger missions where the passenger does not like...