If you mean content examples for learning purposes then maybe yes and no, because even the best content example can teach you only so much from the basics the rest is just a lot of self learning and hard work. I say it again I would rather have more documentation and tutorials on advanced topics than just packs. You would be surprised how much time you waste on simple pros and cons of what method to use where and how and why during a workflow for the basics when it comes to Unreal, we spent months figuring out some things the hard way when it would’ve taken a few hours/days if things were better documented in some of those areas.
If you are speaking of modding and packs for game usage purposes to populate your game or map with them, then I don’t see how this is any different than asset flipping. Why waste time when your game will look just like any other game that is going to use the same packages all over. From a game development point of view it is a waste of time as any success seeking or serious game development will require to have their own original assets made down to modifying grass and trees (considering grass and trees are the easiest asset flipped assets to use in an environment that goes least noticed) then again the amount of and uninteresting trees and vegetation i’ve seen in games these days is staggering, because they mostly use the same packages with almost Zero modifications or molding to them. Of course that also has to do with composition and lighting but that’s another story, if they are not bothering with phase one than they wont be bothering with phase two to begin with.
Epic’s Staff time is little, and in that little time i’d much rather see them focus on the things that truly matter in every day situations using the engine rather than making it a colorful package for all, and i’m speaking as a beginner in the engine (not a beginner in the industry), I don’t want Epic to waste their time giving me new shiny buttons or packs or other fancy useless tools such as (editor VR to build my landscapes) I want them to give me a monochromatic UI with bare bones ugly text but one that is less buggy and well documented with solid features that will help the game creation process from a small team point of view.