Still haven't read anything new. All true indeed if you want to add anything to this galaxy. But what needs to be added is outside of it.
We seem to be working at cross purposes, the galaxy is proceduraly generated from a seed, you can't just "add stuff," outside it because, despite what you see in the game, there is no "outside" to the ED galaxy, what you are looking at when you are at the edge of the galaxy isn't a void you can fill with stuff, it's a picture! This is a game, there is no "outside"!
Of course maybe if you created an entirely new galaxy on a different serve with no connection to the current galaxy, like original Elite with their 256 galaxies. But that was an entirely different model and was built like that because the computers of the time couldn't load any more data due to current microprocessor limitations, the idea of this ED is that the galaxy is entirely one object with everybody exploring the same thing.
Doing it that way would mean essentially duplicating the entire game and all the infrastructure associated with it, it would esentially be two different games that FDEV would have to support but only the same number of players spread between them, and moving from one galaxy to the other would mean being entirely seperated from the existing player base, which completely destroys the intention of ED that everybody is playing in and affects the same galaxy. That would be a costly and ultimately ineffective way of doing things.
Maybe a different game, the next version of Elite, could include things like the dwarf galaxies and other new stuff we have found, but that simply isn't going to happen here because the galaxy model in ED isn't designed to work like that and nothing you can say will change it to work like that. The seed that generates the galaxy generates the galaxy and that's it, if you want more stuff generated such as dwarf galaxies then you need to use a different seed designed to generate said dwarf galaxies as part of the galaxy model.
Of course it should also be pointed out that the reason the galaxy is the size it is is simply because of the limitations of our microprocessors, the number of possible stellar objects in the galaxy is limited by the fact that we are using a 64bit number to assign a unique individual ID to every stellar object in the galaxy, there are none left to create a seperate galaxy anyway, so creating dwarf galaxies as part of the model would actually mean having a smaller, much smaller, main galaxy.