You’re right about the different attitudes to change. The obsession with the trunks is a good example. However I don’t quite agree with the point about the villains at least in the comics. I’m outside media all we get is Lex and Zod and the perception that Supes doesn’t have any other villains has hurt him for sure. It’s why I’m angry that they’re apparently using Brainiac for Kara. However in the comics writers actually are fairly good about creating new villains. Busiek created new Rogues. Morrison created a bunch of new Rogues in his New 52 run such as Nimrod, Vyn, Drekkon, and the Phantom King. Lobdell created new Rogues that were mostly crap. Pak created some new Rogues that were decent like Harrow and her Ghost Soldiers. Jurgens created a ton of new Rogues, unfortunately the ones I liked the most like Conduit and Blanque don’t get used. Kelly created Manchester Black and the Elite. Rucka created some new Rogues. Bendis has made Red Cloud (good), the Invisible Mafia (good), and Rogal (bad) so far.
The problem isn’t creation. The problem is that mostly no one actually uses other peoples Rogues. Everyone abandons the previous writer’s toys to make their own, so all we get is a bunch of OCs and Lex. Sometimes we get someone like Johns or Tomasi who do make use of previous Rogues and do a good job but that’s rare. I am absolutely ******* desperate for someone to do something with Metallo or Parasite. How long have they been part of Superman’s Rogues Gallery and yet the only worthwhile story that has featured the two I can think of in recent years was Johns Secret Origin and I didn’t think their portrayal there was that great.