Building application submitted/open detailed questions/looking forward to suggestions

You have to distinguish between main, accent, and work lighting.
Spots are often used as main lighting, occasionally as accent lighting. They are not suitable as work lighting.
As main lighting, you need about 2 per sqm, so you can calculate how much that costs in total. We only have spots as main lights in the bathroom and bedroom. In halogen, because LED has not proven itself as short main lighting (too expensive). The light is turned on briefly about once a week on average. Instead, we use work and accent lighting in the bathroom, and in the bedroom the bedside lighting via switch.
In the kitchen and living area, ceiling lights are hardly ever turned on. In the kitchen, there is work lighting; in the living area, several accent lights.
In the hallway, ceiling lighting is preferred.

You should consider how you generally handle lighting and then decide whether the cost of ceiling recessed spots is worth it for you. All in all, you can waste quite a lot of money there. I would rather advise you to focus on wall recessed spots: for example, you cannot retrofit those for stair lighting.

Regards, Yvonne

Hm, ok, theoretically *could* a new building also just fall over ...

Yes

Spots are used frequently as key light, occasionally as accent light. They are not suitable as work light.

I can hardly read it anymore.
Although the OP talks about spots, he probably means downlights, which are indeed very suitable and very good as a main light source – see also my explanations above. The rule of two lamps/m² is of course not applicable to downlights in this generalized form – and is actually desirable for true spots.

We decided on true LED downlights (i.e. not the retrofit version for initially halogen-designed sockets) with a corresponding beam angle. This allows for a distance of about three meters in the ceiling to still achieve sufficiently even illumination.

Best regards

K1300S

Can you post pictures of your [Downlights]? I'm somehow confused - to me, [Spots] were holes in the ceiling with light inside. In your links, those are described as, for example, these parts hanging from wires on the ceiling.

Are [Downlights] then the "holes in the ceiling"? I would appreciate some clarification - I'm currently still a bit frustrated with the lighting planning. At first, we also wanted many "[Spots]" (i.e., holes in the ceiling), but now I would only put those in hallways/bathrooms and do the rest with indirect ceiling lighting (partially dropped ceiling), wall lights, and possibly just a few recessed [Spots] in the living areas for accents...

It's not that difficult: Downlights are simply lamps that shine DOWN (= downward) - nothing more for the time being. And usually, they are installed *in* the ceiling or *on* the ceiling (so-called surface-mounted downlights).

Spots are all lamps that produce focused light (see Duden) - so also those that are attached to wires, rods, or otherwise - and possibly do not shine downward (e.g., floor spots). Normally, our everyday language use is quite incorrect here, because most of the time – in my experience – people say spots but mean downlights.

To put it bluntly: Without special requirements, ceiling recessed lights will most likely be used for area lighting rather than spots. To make matters worse, according to Duden, spots are also rotatable and tiltable – which is not the case with my downlights, for example, because it doesn’t make any sense in that position at all.
There are plenty of pictures on Google.

Best regards

K1300S

link entfernt durch Moderation

That means that the downlights also produce rather diffuse light and not "glare"?