Electrical planning - Is something missing?

What I don’t understand is why you want to "disfigure" the basement like that? So you want to pull all the cables straight down and then somehow bring them under the ceiling in the basement into the fuse box....?

We solved it so that we have a vertical installation shaft next to the fireplace in the house, in which all conduits and cables from each floor are contained and then gathered down to the electrical panel. However, we have already pulled in all the cables and only left 1-2 empty conduits free for retrofitting LAN cables or SAT cables.
And as a precaution, we also pulled two thick empty conduits into the installation shaft from the basement to the attic, so that expansions can still be made later.

By the way, our electrician mainly installed 5-core cables so that, for example, a socket can be switched at any time afterwards.

Regarding the spot lighting: 3 and 5w LED spots are not as bright as one might think and certainly not comparable to halogen....

My upstairs hallway is lit with 3x10W LED and I wouldn't go any lower than that, of course you don't always need them at 100% but there are moments when I turn on the full lighting...

I can't confirm that. We have 10x 5 watt LEDs in our upstairs hallway (2.26m x 7.13m). When I turn them on, every stadium would be jealous. Seriously: 8x 10W would have easily sufficed for very bright lighting including the stairs. Even 6x 10W would probably still be okay.

By the way, our electrician mainly installed 5-core cables so that, for example, we can make a socket switchable at any time afterwards.

I can also recommend this for the lighting. We divided the spots in the ceiling into one or two "groups" that we can switch independently. If I want to change the arrangement, I simply connect the respective spot to a different core.

I can't confirm that. We have 10x 5 watt LEDs in our upstairs hallway (2.26m x 7.13m). When I turn them on, every stadium would be jealous.
Seriously: 8x 10W would easily have been enough for very bright lighting including the stairs. Even 6x 10W would probably still be okay.

You yourself write 10x 5W!

The OP writes: 1x 5W spot above the stairs.

Do you notice the difference?

You yourself write 10x 5W!

The OP writes: 1x 5W spot above the stairs

Do you notice the difference?

Then I must have read that wrong. Sorry. ops:

So again:
I have a total of 50W (10x 5W) in the hallway and with that I have an absolutely bright (floodlight-like) lighting, which I would not have expected.
Of these 10 spots, three are directly above the stairs and these provide good illumination there.

In the evenings, we usually only use the stairway lighting (5x 3W). That is enough to move around safely everywhere. For cleaning, for example, it would be too dark for me.

Yes, that's what I'm talking about...