"In my opinion, 3d Printers will eventually kill photo etch."
Nonsense.
Print resolution isn't near PE quality today, and even if it does get there, you won't change the fact that plastics don't have the stiffness or strength to hold up during handling.
Today you're hard pressed to get parts with "wires" under 0.7mm (~ 0.030", or 1/32"). I made stanchions for my Revell Firefighter re-do at this size, and they were flimsy like wet tissue paper and a terror to work with.
Revell Firefighter, with entire cabin structure and most topside details redone in 3DP:
The 1/32" diameter stanchions- almost impossible to work with, and still a bit too clunky:
Another issue, the process tends to warp flimsy parts... even in the multijet process, droplets go down hot then cool... leading to unpredictable warpages depending on part orientation- which in turn is random at most printing houses. Here's a warped ladder for Firefighter... I gave up on it and used a molded HO scale ladder.
But you can get some usable results. Here are my fire monitors, and those dished handwheels would have been very tricky as PE parts!
Cabin, fire monitors, tower, stanchions were all 3D Printed.