I would say there are a lot more than 3 to 4 creators who know what they are doing, but typically in very narrow fields, leaving a large portion of their series undesirable for real game development. They all have that one thing in common, that they have to do a lot of the same repetitive stuff, like animation blueprints, audio, basic UI , inventory, class inheritance, blueprint communication, some AI and other such things, not to forget math and the holy grail, optimization by default for each category, because it has been learned thoroughly over many months or few years.
Another totally overlooked aspect is to showcase the result at the beginning of the project and then build it up from a script without errors and too much talking. The art of teaching has very little to do with knowing the material.
Not to forget unfinished series…
These are too many things to learn and master by anyone, hence imagine this:
Someone wants to make a multiplayer FPS game, which quickly becomes dozens of skills to learn.
Why learn it all from one person, when the best in each field could teach each subject in a tree like setup?
Meaning: Once the character has been setup properly through one series from one creator, inventory, UMG, AI, sound etc. can be followed up on from someone else.
This would require that they would actually build upon a specific foundation.
As for specific use cases not covered in the tutorial, someone else could make a new tutorial on how to set the current template up in a different way, add new features, or even improve upon it.
Imagine a mind map where you choose, let’s say; “Single player racing game with realistic graphics and procedural music that reacts to game play events.”
That would then open up a path, all the way from “How to install the engine” and to “How to publish, market and monetize your game.” You then select which parts of that tree you need to study to get to your goal.
I use no more than five tutorial creators because they know what they are doing. The rest comes from gazillion sources.
And lastly, it would be great to see educational content in various skill levels, so that the noobs can get everything described, whereas the experienced ones can get an hour long video boiled down to three minutes and different levels in-between.
Or: EPIC would have verified tutorial makers making fresh content from the endless plethora of content from around the internet, saving everyone heaps of time and speeding up the quality and quantity of new UE products.
TLTR: I know this is a great idea, the execution however could be a massive headache.