Railjack was simplified a lot but I still think a tutorial to walk new players through basic functions, especially the forge would help with the headless chickens.
The forge "refine" button is an annoyance that once in a while makes a run take 3x the usual time by stripping crafting resources, I'd suggest it be removed and the rewards bumped up a tiny bit - or it should only be usable once there are no objectives left.
Switching between seats could be made a bit more fun by enabling an instant switch between stations/gunner/artillery seats rather than getting out and running around