For me as a player who doesn't play solo, crew is never used. And this is sad, since the idea itself is cool, especially as a fan of the first mass effect.
Let's move on to new game modes, especially defense. I think when you DE talked about defense in space, that's not what we wanted. Make a normal defense mode, where each tenno is on his railjack, with his own unique team and build. Endless mission on space ships. You wanted everyone to feel the significance , not just the host.
I have now farmed a new guard and a penta. And playing defense and exterminate after flying a minute before