I'm fundamentally opposed to the kind of reforms proposed by "modeller".
I don't want a perfect micromanaged toy world.
I like the chaos and sheer unexpectedness of the forum as it is; it's like a rummage sale, or a parts bin, and someone with a completely different background and life experience will challenge your thinking.
Hell, software and hardware design requires rigid, methodical thinking, so it's good to come somewhere where you can encounter other people with a different outlook.
I don't want compartmentalisation.
If you want/need an Arduino forum just for toy trains, start one, but don't stunt the growth of this one.